APA (7th ed.) Citation

Ruby, I., Ruby, A., & Ursprung, P. (2004). Images: A picture book of architecture. Prestel.

Chicago Style (17th ed.) Citation

Ruby, Ilka, Andreas Ruby, and Philip Ursprung. Images: A Picture Book of Architecture. Munich ; New York: Prestel, 2004.

MLA (9th ed.) Citation

Ruby, Ilka, et al. Images: A Picture Book of Architecture. Prestel, 2004.