Time-Life Books. (1987). Getting firm: Shaping and toning. Time-Life Books.
芝加哥风格引文Time-Life Books. Getting Firm: Shaping and Toning. Alexandria, Virginia: Time-Life Books, 1987.
MLA引文Time-Life Books. Getting Firm: Shaping and Toning. Time-Life Books, 1987.
警告：这些引文格式不一定是100％准确.