APA aipamena

CPRE. (1997). water a book of facts and activities.

Chicago Style aipamena

CPRE. Water a Book of Facts and Activities. Chennai, C P R Environmental Education Centre, 1997.

MLA aipamena

CPRE. Water a Book of Facts and Activities. 1997.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.