Griffin, C. W. (2006). Manual of low-slope roof systems. New York: McGraw-Hill.
Dyfyniad Arddull ChicagoGriffin, C. W. Manual of Low-slope Roof Systems. New York: McGraw-Hill, 2006.
Dyfyniad MLAGriffin, C. W. Manual of Low-slope Roof Systems. New York: McGraw-Hill, 2006.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.