APA aipamena

Alcala, A. (2008). Agusan River estuary development potential. Malaya.

Chicago Style aipamena

Alcala, Angel. "Agusan River Estuary Development Potential." Malaya 2008.

MLA aipamena

Alcala, Angel. "Agusan River Estuary Development Potential." Malaya, 2008.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.