Citazione Stile APA (7a Edizione)

Class, R. A., & Koehler, R. E. (1976). Current techniques in architectural practice. American Institute of Architects.

Citazione stile Chigago Style (17a edizione)

Class, Robert Allan, e Robert E. Koehler. Current Techniques in Architectural Practice. Washington: American Institute of Architects, 1976.

Citatione MLA (8a ed.)

Class, Robert Allan, e Robert E. Koehler. Current Techniques in Architectural Practice. American Institute of Architects, 1976.