Cita APA (7a ed.)

Horton, D. (1966). Vatican diary, 1965: A Protestant observes the forth session of Vatican Council II. United church press.

Cita Chicago Style (17a ed.)

Horton, Douglas. Vatican Diary, 1965: A Protestant Observes the Forth Session of Vatican Council II. Philadelphia: United church press, 1966.

Cita MLA (9a ed.)

Horton, Douglas. Vatican Diary, 1965: A Protestant Observes the Forth Session of Vatican Council II. United church press, 1966.