Heim, B. B. (1981). Heraldry in the catholic church: Its origin, customs, and laws (2. ed.). Van Duren.
Citação norma ChicagoHeim, Bruno Bernhard. Heraldry in the Catholic Church: Its Origin, Customs, and Laws. 2. ed. Gerrards Cross: Van Duren, 1981.
Citação norma MLAHeim, Bruno Bernhard. Heraldry in the Catholic Church: Its Origin, Customs, and Laws. 2. ed. Van Duren, 1981.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.