Online travel reviews as persuasive communication: The effects of content type, source, and certification logos on consumer behavior / Beverley A. Sparks, Helen E. Perkins, Ralf Buckley
UNWTO High-Level Regional Conferenv«ce on green tourism : Final report / UNWTO
Visitors’ acceptance of negative ecological impacts in national parks: comparing the explanatory power of psychographic scales in a Norwegian mountain setting / Jan Vidar Haukeland [et al]