Grammarly
Grammarly Handbook: Citations
This page focuses on the need for proper citation of all sources including in-text, footnotes, and endnotes in the appropiate style.
University of Wisconsin
University of Wisconsin Madison: Documentation Styles
This is one of the more thorough reference tools on documentation styles. It covers the major style guides, including APSA, APA, Chicago/Turabian, CBE, and MLA. Numbered references are also explained. One section of links is devoted to...
Other
Apa Style Central
Use this comprehensive resource to learn about APA style. Students and teachers can use this site as a springboard for any questions they may have concerning APA Style.
Sophia Learning
Sophia: Avoiding Plagiarism: Lesson 2
This lesson goes over how to avoid unintentional plagiarism. It is 2 of 4 in the series titled "Avoiding Plagiarism."