APA-referens (7:e uppl.)
Tierney, B. (1964). The crisis of church & state, 1050-1300: With selected documents. Prentice-Hall.
Chicago-referens (17:e uppl.)
Tierney, Brian. The Crisis of Church & State, 1050-1300: With Selected Documents. Englewood Cliffs, N.J.: Prentice-Hall, 1964.
MLA-referens (9:e uppl.)
Tierney, Brian. The Crisis of Church & State, 1050-1300: With Selected Documents. Prentice-Hall, 1964.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.