All quotes must fit smoothly into the text. Any quotation longer than 3 lines should be indented and single-spaced. For the correct format, see Footnote 1. Try and ensure that you spell the authors and titles correctly. But always date your citation.
Websites are much less stable than publicly printed books and articles.
Sometimes they disappear. Always consider too how far and why you should trust the information offered, just as you would a book or a con artist. In my former life, I never expected students to provide footnotes and bibliographies. In North America they are, however, required, and we too must follow local rules. One quite common rationale says that you cite sources to establish that your work is your own, that you are not plagiarizing.