Cita APA (7a ed.)

Hügel, F., & Chambers, P. F. (1964). Selected writings. Collins.

Cita Chicago Style (17a ed.)

Hügel, Friedrich, y Percy Franklin Chambers. Selected Writings. London: Collins, 1964.

Cita MLA (9a ed.)

Hügel, Friedrich, y Percy Franklin Chambers. Selected Writings. Collins, 1964.