Cita APA (7th ed.)

Warmenhoven, H. J. (1993). Western Europe (3a. ed.). Dushkin.

Cita Chicago (17th ed.)

Warmenhoven, Henri J. Western Europe. 3a. ed. Guilford: Dushkin, 1993.

Cita MLA (9th ed.)

Warmenhoven, Henri J. Western Europe. 3a. ed. Dushkin, 1993.