[1] Medan Mehta Ph.D., Walter Scarborough, Diane Armpriest, Building Construction: Principles, Materials, & Systems (2nd Edition), January 6, 2012, ISBN-10: 0132148692 , ISBN-13: 978-0132148696
[2] Francis D. K. Ching, Cassandra Adams, Building Construction Illustrated, October 2, 2000, ISBN-10: 0471358983 , ISBN-13: 978-0471358985 , Edition: 3rd