APA (7th ed.) Citation

Pe na, W., Parshall, S., & Kelly, K. (1987). Problem seeking: An architectural programming primer (3rd ed.). AIA Press.

Chicago Style (17th ed.) Citation

Pe na, William, Steven Parshall, and Kevin Kelly. Problem Seeking: An Architectural Programming Primer. 3rd ed. Washington: AIA Press, 1987.

MLA (9th ed.) Citation

Pe na, William, et al. Problem Seeking: An Architectural Programming Primer. 3rd ed. AIA Press, 1987.