Cita APA (7a ed.)

Hume, M., & Ketcham, H. (1970). Philip II of Spain. Greenwood Press.

Cita Chicago Style (17a ed.)

Hume, Martin, y Henry Ketcham. Philip II of Spain. Westport: Greenwood Press, 1970.

Cita MLA (9a ed.)

Hume, Martin, y Henry Ketcham. Philip II of Spain. Greenwood Press, 1970.