Dyfyniad APA

Gutiérrez, R. (1999). Protected wild areas and tourism competitiveness.

Dyfyniad Arddull Chicago

Gutiérrez, Rafael. Protected Wild Areas and Tourism Competitiveness. 1999.

Dyfyniad MLA

Gutiérrez, Rafael. Protected Wild Areas and Tourism Competitiveness. 1999.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.