APA-referens (7:e uppl.)
Diehl, R. A. (1974). Studies of ancient Tollan: A report of the University of Missouri Tula archaeological project. University of Missouri-Columbia.
Chicago-referens (17:e uppl.)
Diehl, Richard A. Studies of Ancient Tollan: A Report of the University of Missouri Tula Archaeological Project. Missouri: University of Missouri-Columbia, 1974.
MLA-referens (9:e uppl.)
Diehl, Richard A. Studies of Ancient Tollan: A Report of the University of Missouri Tula Archaeological Project. University of Missouri-Columbia, 1974.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.