Time-Life Books. (1987). The fit body: Building endurance. Time-Life Books.
Citazione stile Chigago Style (17a edizione)Time-Life Books. The Fit Body: Building Endurance. Alexandria, Va: Time-Life Books, 1987.
Citatione MLA (9a ed.)Time-Life Books. The Fit Body: Building Endurance. Time-Life Books, 1987.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.