Dyfyniad APA
Williamson.Thomas G & Williamson, T. G. (2002). APA engineered wood handbook. McGraw-Hill.
Dyfyniad Arddull Chicago
Williamson.Thomas G and Thomas G. Williamson. APA Engineered Wood Handbook. New York: McGraw-Hill, 2002.
Dyfyniad MLA
Williamson.Thomas G and Thomas G. Williamson. APA Engineered Wood Handbook. McGraw-Hill, 2002.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.