Dyfyniad APA

(1973). Great historic places: By the editors of American heritage. New York: McGraw Hill.

Dyfyniad Arddull Chicago

Great Historic Places: By the Editors of American Heritage. New York: McGraw Hill, 1973.

Dyfyniad MLA

Great Historic Places: By the Editors of American Heritage. New York: McGraw Hill, 1973.

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