APA ציטוט

(1997). Natural resources development: Focus: tropical. Gernamy: The institute for Scientific Co-operation.

Trích dẫn kiểu Chicago

Natural Resources Development: Focus: Tropical. Gernamy: The institute for Scientific Co-operation, 1997.

ציטוט MLA

Natural Resources Development: Focus: Tropical. Gernamy: The institute for Scientific Co-operation, 1997.