Cita APA (7a ed.)

Logstrup, K. E. (1971). The ethical demand. Fortress Press.

Cita Chicago Style (17a ed.)

Logstrup, K. E. The Ethical Demand. Philadelphia: Fortress Press, 1971.

Cita MLA (9a ed.)

Logstrup, K. E. The Ethical Demand. Fortress Press, 1971.