APA (7th ed.) Citation

King, K. L. (2003). What is Gnosticism? Belknap Press of Harvard Univ. Press.

Chicago Style (17th ed.) Citation

King, Karen L. What Is Gnosticism? Cambridge, Mass. [u.a.]: Belknap Press of Harvard Univ. Press, 2003.

MLA (9th ed.) Citation

King, Karen L. What Is Gnosticism? Belknap Press of Harvard Univ. Press, 2003.

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