APA aipamena

Edwards, S. N. a., McLaughlin, W. J., & Ham, S. H. (1999). Comparative study of ecotourism policy in the americas: Latin America and the Caribbean (Primera edición.). OEA, University of Idaho.

Chicago Style aipamena

Edwards, Stephen N. autor, William J. McLaughlin, and Sam H. Ham. Comparative Study of Ecotourism Policy in the Americas: Latin America and the Caribbean. Primera edición. Washington: OEA, University of Idaho, 1999.

MLA aipamena

Edwards, Stephen N. autor, et al. Comparative Study of Ecotourism Policy in the Americas: Latin America and the Caribbean. Primera edición. OEA, University of Idaho, 1999.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.