APA Citation

Popper, K. R. 1., & Keuth, H. (1998). Logik der forschung. Berlin: Akademie.

Chicago Style Citation

Popper, Karl R. 1902-1994, and Herbert Keuth. Logik Der Forschung. Berlin: Akademie, 1998.

MLA Citation

Popper, Karl R. 1902-1994, and Herbert Keuth. Logik Der Forschung. Berlin: Akademie, 1998.

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