APA

Huxley A., . (1945). The perennial philosophy. New York: Harper.

Chicago

Huxley Aldous, . 1945. The perennial philosophy. New York: Harper.

Harvard

Huxley A., . (1945). The perennial philosophy. New York: Harper.

MLA

Huxley Aldous, . The perennial philosophy. New York: Harper. 1945.