APA (7th ed.) Citation

Hilde G. Nielsen. Outdoor Recreation: Physiological and Psychological Effects on Health.

Chicago Style (17th ed.) Citation

Hilde G. Nielsen. Outdoor Recreation: Physiological and Psychological Effects on Health.

MLA (9th ed.) Citation

Hilde G. Nielsen. Outdoor Recreation: Physiological and Psychological Effects on Health.

Warning: These citations may not always be 100% accurate.