APA aipamena

Dalfelt, A. (1977). Nature conservation status survey for middle America.

Chicago Style aipamena

Dalfelt, A. Nature Conservation Status Survey for Middle America. 1977.

MLA aipamena

Dalfelt, A. Nature Conservation Status Survey for Middle America. 1977.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.