APA Citation

Bien, A. (1999). Errors and principles of action of ecotourism projects. Universidad Nacional, Costa Rica.

Chicago Style Citation

Bien, Amos. Errors and Principles of Action of Ecotourism Projects. Universidad Nacional, Costa Rica, 1999.

MLA Citation

Bien, Amos. Errors and Principles of Action of Ecotourism Projects. Universidad Nacional, Costa Rica, 1999.

Warning: These citations may not always be 100% accurate.