Lua APA (7ú heag.)

Knetsch, J. L. (1974). Outdoor recreation and water resources planning. American Geophysical Union.

Lua i Stíl Chicago (17ú heag.)

Knetsch, Jack L. Outdoor Recreation and Water Resources Planning. Washington: American Geophysical Union, 1974.

Lua MLA (8ú heag.)

Knetsch, Jack L. Outdoor Recreation and Water Resources Planning. American Geophysical Union, 1974.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.