APA-referens (7:e uppl.)

Porter, A. K. (1966). Medieval architecture, its origins and development, with lists of monuments and bibliographies. Reprinted by Hacker Art Books.

Chicago-referens (17:e uppl.)

Porter, Arthur Kingsley. Medieval Architecture, Its Origins and Development, with Lists of Monuments and Bibliographies. New York: Reprinted by Hacker Art Books, 1966.

MLA-referens (9:e uppl.)

Porter, Arthur Kingsley. Medieval Architecture, Its Origins and Development, with Lists of Monuments and Bibliographies. Reprinted by Hacker Art Books, 1966.