APA
The most common types of sources are listed here, but for explanations and examples of other types of sources, please ask your instructor, a librarian or refer to the Publication Manual of the American Psychological Association (6th ed.) (Ref BF76.7.P83 2010).
Video:APA Citation Style
Tutorial: APA Citations
Microsoft Word 2013 for PC (YouTube video courtesy of Samuel Forlenza)
MLA
The most common types of sources are listed here, but for explanations and examples of other types of sources, please ask your instructor, a librarian or refer to the MLA Handbook for Writers of Research Papers (8th ed.) (Ref LB2369 .G53 2016).
Video: MLA 8th edition citation style
Tutorial: MLA 8th edition citation style
(YouTube videos courtesy of USCA Library)
CMS
The most common types of sources are listed here, but for explanations and examples of other types of sources, please ask your instructor, a librarian or refer to the Chicago Manual of Style (16th ed.) (RefZ253 .U69 2010). Or link to the online edition here.
Langsdale's in-depth guide to CS can be found here.
(YouTube videos courtesy of USCA Library)
(YouTube video courtesy of Akhallu7)
For less frequently occurring examples such as multivolume works, or technical reports please ask for assistance from a librarian or consult the style manual.
The Chicago Manual of Style by 
MLA Handbook by 
MLA Handbook for Writers of Research Papers by 
Publication Manual of the American Psychological Association by