APA (7e ed.) Bronvermelding

Astillero, E. (1976). An exercise in integrated river planning: The Bicol River Basin Development Program. Bicol River Basin Council.

Chicago (17e ed.) Bronvermelding

Astillero, Emmanuel. An Exercise in Integrated River Planning: The Bicol River Basin Development Program. [S.L.]: Bicol River Basin Council, 1976.

MLA (9e ed.) Bronvermelding

Astillero, Emmanuel. An Exercise in Integrated River Planning: The Bicol River Basin Development Program. Bicol River Basin Council, 1976.