Dyfyniad APA

(1978). Directory of official architecture and planning (22nd.). George Godwin.

Dyfyniad Arddull Chicago

Directory of Official Architecture and Planning. 22nd. Kent: George Godwin, 1978.

Dyfyniad MLA

Directory of Official Architecture and Planning. 22nd. George Godwin, 1978.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.