Cita APA (7th ed.)

Walker, H. V. (1990). Energy conservation: Design resource handbook. Royal Architectural Institute of Canada.

Cita Chicago (17th ed.)

Walker, Howard V. Energy Conservation: Design Resource Handbook. Ottawa: Royal Architectural Institute of Canada, 1990.

Cita MLA (9th ed.)

Walker, Howard V. Energy Conservation: Design Resource Handbook. Royal Architectural Institute of Canada, 1990.