Current techniques in architectural practice.

MLA

Class, R.A, and E Koehler. Current Techniques In Architectural Practice. New York: Architectural Record, 1976.

APA

Class, R., & Koehler, E. (1976). Current techniques in architectural practice. New York: Architectural Record.

Chicago

Class, R.A., and E Koehler. Current Techniques In Architectural Practice. New York: Architectural Record, 1976.