APA-viite

Ravenstein E.G.tr. (1998). Journal of the first voyage of vasco da gama, 1497-1499. Educational services.

Chicago-tyylinen lähdeviittaus

Ravenstein E.G.tr. Journal of the First Voyage of Vasco Da Gama, 1497-1499. New Delhi: Educational services, 1998.

MLA-viite

Ravenstein E.G.tr. Journal of the First Voyage of Vasco Da Gama, 1497-1499. Educational services, 1998.