APA aipamena

Olafson, F. A. (1967). Principles and persons: An ethical interpretation of existentialism. Johns Hopkins Press.

Chicago Style aipamena

Olafson, Frederick A. Principles and Persons: An Ethical Interpretation of Existentialism. Baltimore: Johns Hopkins Press, 1967.

MLA aipamena

Olafson, Frederick A. Principles and Persons: An Ethical Interpretation of Existentialism. Johns Hopkins Press, 1967.