APA (7th ed.) Citation

Achten, U. (1979). Portfolio with 24 posters.

Chicago Style (17th ed.) Citation

Achten, Udo. Portfolio with 24 Posters. 1979.

MLA (8th ed.) Citation

Achten, Udo. Portfolio with 24 Posters. 1979.

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