APA (7th ed.) Citation

Gustafson, F. (1990). The Black Madonna. Sigo Press.

Chicago Style (17th ed.) Citation

Gustafson, Fred. The Black Madonna. Boston: Sigo Press, 1990.

MLA (8th ed.) Citation

Gustafson, Fred. The Black Madonna. Sigo Press, 1990.

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