APA (7th ed.) Citation

Bertram, A. (1972). Berlin Ost. (German Democratic Republic) . International.

Chicago Style (17th ed.) Citation

Bertram, Axel. Berlin Ost. (German Democratic Republic) . International. 1972.

MLA (8th ed.) Citation

Bertram, Axel. Berlin Ost. (German Democratic Republic) . International. 1972.

Warning: These citations may not always be 100% accurate.