Broughton, Vanda
Facet Publishing, 2006
Buku Teks
Camm, F. J., editor
George Newnes Limited, 1960
Buku Referensi
Van Duyn, Julia
Reston Publishing Company, Inc ., 1975
Buku Teks SO
Levy, Sidney M.
Elsevier, 2012
Buku Teks
American Institute of Timber Construction
John Wiley & Sons, 2012
Buku Teks