Cita APA (7a ed.)

Boxer, C. (1973). The Portuguese Seaborne Empire: 1415-1825. Penguin.

Cita Chicago Style (17a ed.)

Boxer, C.R. The Portuguese Seaborne Empire: 1415-1825. Middlesex: Penguin, 1973.

Cita MLA (9a ed.)

Boxer, C.R. The Portuguese Seaborne Empire: 1415-1825. Penguin, 1973.