No matter the format or type, you will need to cite it! The parts or elements of a citation varies by type. Here are three common examples, a journal article, book, and book chapter.
Note: These elements listed are essential. However, citation styles may ask for more bibliographic information.
Journal Article elements: Title of the Article, Author, Title of the Journal, Volume and Issue Number, Date of Publication, Page Numbers
Book elements: Title, Author, Place of Publication, Publisher, Date of Publication
Book chapter elements: Chapter Title, Chapter Author, Book Title, Book Author, Place of Publication, Publisher, Date of Publication, Chapter Pages