APA (7th ed.) Citation

Mark, J. (1978). The Ennead. Kestrel Books div. of Penguin Books.

Chicago Style (17th ed.) Citation

Mark, Jan. The Ennead. Harmondsworth, Middlesex: Kestrel Books div. of Penguin Books, 1978.

MLA (9th ed.) Citation

Mark, Jan. The Ennead. Kestrel Books div. of Penguin Books, 1978.

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