APA-viite (7. p.)

Simon, B. (2004). The essence of the gnostics (Eagle editions.). Chartwell Books.

Chicago-viite (17. p.)

Simon, Bernard. The Essence of the Gnostics. Eagle editions. Edison, N.J: Chartwell Books, 2004.

MLA-viite (9. p.)

Simon, Bernard. The Essence of the Gnostics. Eagle editions. Chartwell Books, 2004.