Dyfyniad APA

White House Historical Association. (1999). The White House. An Historic Guide. Washington, [s. n.], 1999.

Dyfyniad Arddull Chicago

White House Historical Association. The White House. An Historic Guide. Washington, [s. n.], 1999, 1999.

Dyfyniad MLA

White House Historical Association. The White House. An Historic Guide. Washington, [s. n.], 1999, 1999.

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