Lua APA (7ú heag.)
Gössling, S., & Hultman, J. (2006). Ecotourism in Scandinavia: Lessons in theory and practice. CABI.
Lua i Stíl Chicago (17ú heag.)
Gössling, Stefan, agus Johan Hultman. Ecotourism in Scandinavia: Lessons in Theory and Practice. Wallingford: CABI, 2006.
Lua MLA (9ú heag.)
Gössling, Stefan, agus Johan Hultman. Ecotourism in Scandinavia: Lessons in Theory and Practice. CABI, 2006.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.