APA način citiranja (7. izdanje)

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

Čikaški stil citiranja (17. izdanje)

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

MLA način citiranja (9. izdanje)

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