Journal Articles:
1.Chumakov K, Ehrenfeld E, Wimmer E, Agol VI. Vaccination against polio should not be stopped. Nat Rev Microbiol. 2007;5(12):952–8. doi: 10.1038/nrmicro1769, PMID 17965726.
Websites:
1.World Health Organization (WHO). Last updated 17 April 2020; 2020. Available from: https://www.who.int/emergencies/diseases/novelcoronavirus-2019.
2.World Health Organization website; 2003. Summary of Probable SARS Cases With Onset of Illness from 1 November 2002 to 31 July 2003 (based on data as of December 31, 2003) [cited Jan 19, 2020]. Available from: http://who.int/csr/sars/country/table2004_04_21/en/.
Preprint Articles:
Dong N, Yang X, Ye L, Chen K, Chan EW-C, Yang M, et al. 2020. Genomic and protein structure modeling analysis depicts the origin and infectivity of 2019-nCoV, a new coronavirus that caused a pneumonia outbreak in Wuhan,China. doi: 10.1101/2020.01.20.913368. (This article is a preprint and has not been certified by peer review).

Citation of a Patent:
Lu TK, Koeris MS, Chevalier B, Holder J, McKenzie G, Brownell D. May; 2013. Recombinant phage and methods. US patent 13/627. Vol. 060.

Books:
Books from the database of a library-single author:

Dhakane RD 2018. Microbial Agriculture: objective pattern. Microbial science.

Book considered from the website without DOI (single author):
Dhakane RD. Microbial Agriculture: objective pattern; 2018. Microbial Science. Available from: http://test.fda.gov/NewsEvents/Newsroom/PressAnnouncements/2005/ucm1045252.htm. (It is recommended not to break the URLs since this will stop the working of the link).

Two authors with edition:
Dhakane R, Shinde A. Microbial Agriculture: objective pattern. 2nd ed; 2020. Microbial Science. (Note: there is no need to report the first edition).

Three-twenty authors with DOI:
Dhakane R, Shinde A, Bhattacharjee S, Thakrar BT, Dutkowski R, Koerner A et al. Microbial Agriculture: objective pattern. Adv Ther. 2012;29(10):826–48. doi: 10.1007/s12325-012-0050-8, PMID 23054689 (Note: Write names of all authors).

Reference work:

Dhakane R, D, Shinde AS, Bhattarjee S, editors 2020. Microbial Agriculture: objective pattern. Microbial science.

Entire Website:
Mendeley JA, Thomson M, Coyne RP. How and When to Reference; 2017, January 16. Available from: https://www.howandwhentoreference.com.

Webpage:
Mitchell JA, Thomson M, Coyne RP. APA citation; 2017, January 25. How and when to reference. Available from: https://www.howandwhentoreference.com/APAcitation.

Book Chapters:
Steudler S, Werner A, Cheng J. Cultivation of medicinal mushroom biomass by solid-state bioprocessing in bioreactors. In: Solid-state fermentation. Steudler S, Werner à jay cheng j (eds). 1st ed. Vol. 169. Springer; 2019. p. 3–25.

Article in Conference Proceedings:
Holzapfel GA, Schulze-Bauer CAJ, Stadler M. Mechanics of angioplasty: wall, balloon, and stent. In: Casey J, Bao G, editors. New York: American Society of Mechanical Engineers; 2000:141–56. doi: 10.1115/IMECE2000-1927. AMD. Vol 242/BED–vol;46:141–56.