Cita APA (7a ed.)

Mackinnon, C. (1972). The observer's book of heraldry. Warne.

Cita Chicago Style (17a ed.)

Mackinnon, Charles. The Observer's Book of Heraldry. London [etc.]: Warne, 1972.

Cita MLA (9a ed.)

Mackinnon, Charles. The Observer's Book of Heraldry. Warne, 1972.