O'Donnell, G. E. (1971). One Hundred Years at Overbrook, 1871-1971. Philadelphia.
Cita Chicago Style (17a ed.)O'Donnell, George Edward. One Hundred Years at Overbrook, 1871-1971. Philadelphia, 1971.
Cita MLA (8a ed.)O'Donnell, George Edward. One Hundred Years at Overbrook, 1871-1971. Philadelphia, 1971.
Precaución: Estas citas no son 100% exactas.