APA (7th ed.) Citation

(1970). Porträt Westberliner Maler Karl Oppermann.

Chicago Style (17th ed.) Citation

Porträt Westberliner Maler Karl Oppermann. 1970.

MLA (8th ed.) Citation

Porträt Westberliner Maler Karl Oppermann. 1970.

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