Cita APA (7th ed.)

Pena, W., & Parshall, S. (2001). Problem seeking: An architectural programming primer (4th ed.). Wiley.

Cita Chicago (17th ed.)

Pena, William, i Steven Parshall. Problem Seeking: An Architectural Programming Primer. 4th ed. New York: Wiley, 2001.

Cita MLA (9th ed.)

Pena, William, i Steven Parshall. Problem Seeking: An Architectural Programming Primer. 4th ed. Wiley, 2001.