APA (7th ed.) Citation

Keen, M. L., & Sweet, D. (1971). Der Mensch. Tessloff.

Chicago Style (17th ed.) Citation

Keen, Martin L., and Darrell Sweet. Der Mensch. Nürnberg: Tessloff, 1971.

MLA (9th ed.) Citation

Keen, Martin L., and Darrell Sweet. Der Mensch. Tessloff, 1971.

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