APA-viite

Báez, A., & Valverde, F. (1999). Keys to the success of ecotourism projects with community participation. The Costa Rican case of the sky walk - sky trek.

Chicago-tyylinen lähdeviittaus

Báez, Ana, ja Fernando Valverde. Keys to the Success of Ecotourism Projects With Community Participation. The Costa Rican Case of the Sky Walk - Sky Trek. 1999.

MLA-viite

Báez, Ana, ja Fernando Valverde. Keys to the Success of Ecotourism Projects With Community Participation. The Costa Rican Case of the Sky Walk - Sky Trek. 1999.

Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.