Galbreath, D. L., & Briggs, G. (1972). Papal Heraldry (2nd ed. revised by Geoffrey Briggs.). Heraldry Today.
Style de citation Chicago (17e éd.)Galbreath, Donald Lindsay, et Geoffrey Briggs. Papal Heraldry. 2nd ed. revised by Geoffrey Briggs. London: Heraldry Today, 1972.
Style de citation MLA (8e éd.)Galbreath, Donald Lindsay, et Geoffrey Briggs. Papal Heraldry. 2nd ed. revised by Geoffrey Briggs. Heraldry Today, 1972.
Attention : ces citations peuvent ne pas être correctes à 100%.