(1986). The American presidents: The office and the men. Connecticut: Grolier Educational Corporation.
Trích dẫn kiểu ChicagoThe American Presidents: The Office and the Men. Connecticut: Grolier Educational Corporation, 1986.
MLA引文The American Presidents: The Office and the Men. Connecticut: Grolier Educational Corporation, 1986.
警告:這些引文格式不一定是100%准確.