APA (7th ed.) Citation

Pigram, J. (1983). Outdoor recreation and resource management. Croom Helm u.a.

Chicago Style (17th ed.) Citation

Pigram, John. Outdoor Recreation and Resource Management. London u.a: Croom Helm u.a, 1983.

MLA (9th ed.) Citation

Pigram, John. Outdoor Recreation and Resource Management. Croom Helm u.a, 1983.