The Purdue Online Writing Lab is one of the most popular resources for information on citation sytles, and contains lots of valuable, in-depth information
There are many styles of citation available, and your professor will most likely let you know which they prefer. However, there are three major styles that are common based on the field of study:
The Modern Language Association released their most recent update to their handbook in 2016. MLA uses in-text citations with the author's last name & page number, and a Works Cited list at the end of the research paper.
Purdue OWL includes many helpful resources for MLA including:
The American Psychological Association released their most recent update to their handbook in 2010. APA uses in-text citations with the author's last name, the publishing year, and if necessary the page number, and a Reference List at the end of the research paper.
Purdue OWL includes many helpful resources for APA including:
The Chicago style is as of 2017 in its 17th edition. Chicago offers a Notes and Bibliography system of footnotes or endnotes and a bibliography page. The notes have the added advantage of allowing the research paper author to comment on individual sources as they cite them. An author-date style of in-text citations is also permitted.
Purdue OWL includes many helpful resources for Chicago including: General Formatting for all basic Chicago styles.