Cita APA (7a ed.)

Galbreath, D. L., & Briggs, G. (1972). Papal Heraldry (2nd ed. revised by Geoffrey Briggs.). Heraldry Today.

Cita Chicago Style (17a ed.)

Galbreath, Donald Lindsay, y Geoffrey Briggs. Papal Heraldry. 2nd ed. revised by Geoffrey Briggs. London: Heraldry Today, 1972.

Cita MLA (8a ed.)

Galbreath, Donald Lindsay, y Geoffrey Briggs. Papal Heraldry. 2nd ed. revised by Geoffrey Briggs. Heraldry Today, 1972.