A source's citation includes the information necessary to identify and retrieve that source, including but not limited to:
The type of source being cited (books, journals, interviews, blogs, videos, social media, etc.) and the citation style being used will determine what the citation looks like. Choose an appropriate style guide for your needs. Here is an example of an article citation using four different citation styles:
Author - Erik Stokstad
Article Title - Can a Dire Ecological Warning Lead to Action?
Source Title - Science (American Association for the Advancement of Science)
Volume and Issue - Vol. 364, No. 6440
Publication Date - 2019
Page Numbers - 517-518
Digital Object Identifier (DOI) or URL- 10.1126/science.364.6440.517
Modern Language Association (MLA) style:
Stokstad, Erik. "Can a Dire Ecological Warning Lead to Action?" Science (American Association for the Advancement of Science), vol. 364, no. 6440, 2019, pp. 517-518.
American Psychological Association (APA) style:
Stokstad, E. (2019). Can a dire ecological warning lead to action? Science (American Association for the Advancement of Science), 364(6440), 517-518. doi:10.1126/science.364.6440.517
Chicago/Turabian style:
Stokstad, Erik. 2019. "Can a Dire Ecological Warning Lead to Action?" Science (American Association for the Advancement of Science) 364 (6440): 517-518.
American Medical Association (AMA) style:
Stokstad E. Can a dire ecological warning lead to action? Science (American Association for the Advancement of Science). 2019;364:517-518.
The material for the pages on the "Using Sources (Citing, Quoting, and Paraphrasing)" tabs is taken from the guide, "Citation Practices and Avoiding Plagiarism: Examples of Paraphrase," developed by Penn Librarians, Katie Rawson and Nicole Santiago.