APA引文

Brenes, O. (2003). Institutionality and nature of the protection of areas in Costa Rica.

Citación estilo Chicago

Brenes, Oscar. Institutionality and Nature of the Protection of Areas in Costa Rica. 2003.

MLA引文

Brenes, Oscar. Institutionality and Nature of the Protection of Areas in Costa Rica. 2003.

警告：這些引文格式不一定是100％准確.