Shelby, B., & Hoberlein, T. A. (1986). Carrying capacity in recreation setting. Oregon State University Press.
Lua i Stíl Chicago (17ú heag.)Shelby, Bo, agus Thomas A. Hoberlein. Carrying Capacity in Recreation Setting. Corvallis, Orlando: Oregon State University Press, 1986.
Lua MLA (9ú heag.)Shelby, Bo, agus Thomas A. Hoberlein. Carrying Capacity in Recreation Setting. Oregon State University Press, 1986.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.