Cita APA (7a ed.)

David, W. (1984). Environmental effects of watershed modifications. Philippine Institute for Development Studies.

Cita Chicago Style (17a ed.)

David, Wilfrido. Environmental Effects of Watershed Modifications. Makati, Metro Manila: Philippine Institute for Development Studies, 1984.

Cita MLA (9a ed.)

David, Wilfrido. Environmental Effects of Watershed Modifications. Philippine Institute for Development Studies, 1984.