What are footnotes? What are endnotes?
More information:
How do Write Footnotes and Endnotes in MLA Style
Turabian Bibliographic Form: Footnote/Endnote Style from Georgetown University
In-text or parenthetical citations generally include a signal phrase (usually the author's name) to alert the author you are using someone's ideas and a reference (usually the page number).
Examples:
Rose (1994) noted, rap music has both overt and covert political dimensions: "Rap's poetic voice is deeply political in context and spirit, but its hidden struggle--that of access to public space and community resources and the interpretations of Black expression--constitutes rap's hidden politics" (p. 145).
In the past twenty years, hip-hop culture and especially its most popular form of expression, rap music, have spread "from the margins to mainstream" (Stapleton 219).
More information:
MLA In-text citations
APA In-text citations
How do I cite things like interviews, emails, etc.?
When you are using non-standard sources of information it can be more difficult to cite these sources. The official style manual will be the best resource for a complete description of how to cite. Here are a few web sites with information:
Tip: Use a search engine, like Google, and search for "APA citation ERIC document" or "MLA citation interview" to find more examples.