APA (7th ed.) Citation

O'Connor & Wells. (1999). Health and fitness-over 50. The Crowood Press.

Chicago Style (17th ed.) Citation

O'Connor and Wells. Health and Fitness-over 50. Marlborough: The Crowood Press, 1999.

MLA (8th ed.) Citation

O'Connor and Wells. Health and Fitness-over 50. The Crowood Press, 1999.