APA (7th ed.) Citation

Crystal Productions, Brommer, G. F., Hubbard, T., & Hubbard, L. (2004). Elements and principles of design. Crystal Productions.

Chicago Style (17th ed.) Citation

Crystal Productions, Gerald F. Brommer, Tom Hubbard, and Lorry Hubbard. Elements and Principles of Design. Glenview, Ill: Crystal Productions, 2004.

MLA (9th ed.) Citation

Crystal Productions, et al. Elements and Principles of Design. Crystal Productions, 2004.