IES recommended practice for the lumen method of daylight calculations /
prepared by the IES Committee on Calculation Procedures.

APA Citation

Illuminating Engineering Society of North America. Committee on Calculation Procedures. (1989). IES recommended practice for the lumen method of daylight calculations. New York, N.Y.: Illuminating Engineering Society of North America.

MLA Citation

Illuminating Engineering Society of North America. Committee on Calculation Procedures. IES Recommended Practice for the Lumen Method of Daylight Calculations. New York, N.Y.: Illuminating Engineering Society of North America, 1989.

Warning: These citations may not always be complete (especially for serials).