Dugan, A. (1981). Firming your figure. Publications International.
芝加哥风格引文Dugan, Ann. Firming Your Figure. Skokie, Ill: Publications International, 1981.
MLA引文Dugan, Ann. Firming Your Figure. Publications International, 1981.
警告：这些引文格式不一定是100％准确.
APA引文