Cita APA

Xirau, R. 1., & Fromm, E. 1. (1969). The nature of man (2nd printing.). London: The Macmillan Company.

Citación estilo Chicago

Xirau, Ramón 1924-, and Erich 1900-1980 Fromm. The Nature of Man. 2nd printing. London: The Macmillan Company, 1969.

Cita MLA

Xirau, Ramón 1924-, and Erich 1900-1980 Fromm. The Nature of Man. 2nd printing. London: The Macmillan Company, 1969.