Art & Architecture Reference Materials
This group of dictionaries and reference companions cover art & architecture from classical to modern periods, including entire works on gardens, photography, and landscape architecture.
Online Writing Center (OWL), Purdue
Formatting and Style Guides for MLA, APA, and Chicago are included in the resources at OWL.
Citation Fox provides templates and examples. It is not a citation generator. It covers only APA (where this link will land you) and MLA (linked from the bottom of the page) and claims to demonstrate format for over 500 resource types.