Vargas Ulate, G. (2013). TOURISM AND PROTECTED AREAS IN COSTA RICA: CONFRONTATION OR CONCILIATION.
استشهاد بنمط شيكاغوVargas Ulate, Gilbert. TOURISM AND PROTECTED AREAS IN COSTA RICA: CONFRONTATION OR CONCILIATION. 2013.
MLA استشهادVargas Ulate, Gilbert. TOURISM AND PROTECTED AREAS IN COSTA RICA: CONFRONTATION OR CONCILIATION. 2013.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.