Alcala, A. (2008). Agusan River estuary development potential. Malaya.
Citación estilo ChicagoAlcala, Angel. "Agusan River Estuary Development Potential." Malaya 2008.
Cita MLAAlcala, Angel. "Agusan River Estuary Development Potential." Malaya, 2008.
Warning: These citations may not always be 100% accurate.