Cita APA (7a ed.)

Hulton Getty Picture Collection & Yapp, N. (1998). 1930s: : decades of the 20th century = dekaden des 20. jahrhunderts = décennies du XXe siècle. Könemann.

Cita Chicago Style (17a ed.)

Hulton Getty Picture Collection y Nicholas Yapp. 1930s: : Decades of the 20th Century = Dekaden Des 20. Jahrhunderts = Décennies Du XXe Siècle. Köln: Könemann, 1998.

Cita MLA (9a ed.)

Hulton Getty Picture Collection y Nicholas Yapp. 1930s: : Decades of the 20th Century = Dekaden Des 20. Jahrhunderts = Décennies Du XXe Siècle. Könemann, 1998.