Lawrence, W. H. (1908). Principles of architectural perspective (3d ed., rev.). W.B. Clarke Co..
Dyfyniad Arddull ChicagoLawrence, William Henry. Principles of Architectural Perspective. 3d ed., rev. Boston: W.B. Clarke Co., 1908.
Dyfyniad MLALawrence, William Henry. Principles of Architectural Perspective. 3d ed., rev. W.B. Clarke Co., 1908.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.