Cita APA (7a ed.)

Sleeper, H. R. (1961). Architectural specifications. John Wiley and sons.

Cita Chicago Style (17a ed.)

Sleeper, Harold R. Architectural Specifications. New York: John Wiley and sons, 1961.

Cita MLA (9a ed.)

Sleeper, Harold R. Architectural Specifications. John Wiley and sons, 1961.