Time-Life Books. (1987). Getting firm: Shaping and toning. Time-Life Books.
Chicagoスタイル(17版)引用形式Time-Life Books. Getting Firm: Shaping and Toning. Alexandria, Virginia: Time-Life Books, 1987.
MLA(9版)引用形式Time-Life Books. Getting Firm: Shaping and Toning. Time-Life Books, 1987.
警告: この引用は必ずしも正確ではありません.