APA引文

Arrieta, O. (2007). Land Management and Planning in Siquirres. A Geographical Approach.

Citación estilo Chicago

Arrieta, Omar. Land Management and Planning in Siquirres. A Geographical Approach. 2007.

MLA引文

Arrieta, Omar. Land Management and Planning in Siquirres. A Geographical Approach. 2007.

警告：这些引文格式不一定是100％准确.