APA (7th ed.) Citation

Mark, J. (1978). The ennead (1st American ed.). Crowell.

Chicago Style (17th ed.) Citation

Mark, Jan. The Ennead. 1st American ed. New York: Crowell, 1978.

MLA (9th ed.) Citation

Mark, Jan. The Ennead. 1st American ed. Crowell, 1978.

Warning: These citations may not always be 100% accurate.