Wearing, S. L., & McGehee, N. G. (2013). International volunteer tourism: Integrating travellers and communities. CAB International.
Lua i Stíl Chicago (17ú heag.)Wearing, Stephen Leslie, agus Nancy Gard McGehee. International Volunteer Tourism: Integrating Travellers and Communities. Boston: CAB International, 2013.
Lua MLA (8ú heag.)Wearing, Stephen Leslie, agus Nancy Gard McGehee. International Volunteer Tourism: Integrating Travellers and Communities. CAB International, 2013.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.