Eadington, W. R., & Smith, V. L. (1992). Tourism alternatives: Potentials and problems in the development of tourism. University of Pennsylvania Press.
Lua i Stíl Chicago (17ú heag.)Eadington, William R., agus Valene L. Smith. Tourism Alternatives: Potentials and Problems in the Development of Tourism. Philadelphia, Penn: University of Pennsylvania Press, 1992.
Lua MLA (9ú heag.)Eadington, William R., agus Valene L. Smith. Tourism Alternatives: Potentials and Problems in the Development of Tourism. University of Pennsylvania Press, 1992.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.