Sears, B. (1997). Mastering the zone: The next step in achieving superhealth and permanent fat loss. Regan Books.
Lua i Stíl Chicago (17ú heag.)Sears, Barry. Mastering the Zone: The Next Step in Achieving Superhealth and Permanent Fat Loss. New York: Regan Books, 1997.
Lua MLA (9ú heag.)Sears, Barry. Mastering the Zone: The Next Step in Achieving Superhealth and Permanent Fat Loss. Regan Books, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.