Studies in occult philosophy
MLA
De Purucker, Gottfried. Studies In Occult Philosophy. Pasadena California: Theosophical University Press, 1973.
APA
De Purucker, G. (1973). Studies in occult philosophy. Pasadena California: Theosophical University Press.
Chicago
De Purucker, Gottfried, Studies In Occult Philosophy. Pasadena California: Theosophical University Press, 1973.