Dyfyniad APA

O'Donnell, G. E. (1971). One Hundred Years at Overbrook, 1871-1971. Philadelphia.

Dyfyniad Arddull Chicago

O'Donnell, George Edward. One Hundred Years at Overbrook, 1871-1971. Philadelphia, 1971.

Dyfyniad MLA

O'Donnell, George Edward. One Hundred Years at Overbrook, 1871-1971. Philadelphia, 1971.

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