APA (American Psychological Association) style is most commonly used to cite sources within the social sciences.
APA Formatting and Style Guide
In-Text Citations: The Basics
In-Text Citations: Author/Authors
Footnotes and Endnotes
Reference List: Basic Rules
Reference List: Author/Authors
Reference List: Articles in Periodicals
Reference List: Books
Reference List: Other Print Sources
Reference List: Electronic Sources
Reference List: Other Non-Print Sources
Additional Resources
APA Stylistics: Avoiding Bias
APA Stylistics: Basics
APA Headings and Seriation
APA PowerPoint Slide Presentation
APA Sample Paper
APA Tables and Figures 1
APA Tables and Figures 2
APA Abbreviations