Time-Life Books. (1987). Getting firm: Shaping and toning. Time-Life Books.
Lua i Stíl Chicago (17ú heag.)Time-Life Books. Getting Firm: Shaping and Toning. Alexandria, Virginia: Time-Life Books, 1987.
Lua MLA (9ú heag.)Time-Life Books. Getting Firm: Shaping and Toning. Time-Life Books, 1987.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.