APA استشهاد

Robert H.Perry, T. G. H. (1987). Building systems reference guide. McGraw-Hill.

استشهاد بنمط شيكاغو

Robert H.Perry, Tyler G Hicks. Building Systems Reference Guide. New York: McGraw-Hill, 1987.

MLA استشهاد

Robert H.Perry, Tyler G Hicks. Building Systems Reference Guide. McGraw-Hill, 1987.