APA (7e ed.) Bronvermelding

O'Hara, V. (1990). The fitness option: Five weeks to healing stress (2nd ed.). Dawn.

Chicago (17e ed.) Bronvermelding

O'Hara, Valerie. The Fitness Option: Five Weeks to Healing Stress. 2nd ed. Nevada City, CA: Dawn, 1990.

MLA (9e ed.) Bronvermelding

O'Hara, Valerie. The Fitness Option: Five Weeks to Healing Stress. 2nd ed. Dawn, 1990.