Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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