Cita APA (7a ed.)

Marjay, F. P., & Habsburg, O. (1970). Portuguese navigators heroes of the sea. Livraria Bertrand.

Cita Chicago Style (17a ed.)

Marjay, Frederic Pedro, y Otto Habsburg. Portuguese Navigators Heroes of the Sea. Lisboa: Livraria Bertrand, 1970.

Cita MLA (9a ed.)

Marjay, Frederic Pedro, y Otto Habsburg. Portuguese Navigators Heroes of the Sea. Livraria Bertrand, 1970.