Dyfyniad APA

American Institute of Architects. The Octagon. American Institute of Architects].

Dyfyniad Arddull Chicago

American Institute of Architects. The Octagon. [Washington, D.C.: American Institute of Architects].

Dyfyniad MLA

American Institute of Architects. The Octagon. American Institute of Architects].

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