Cita APA (7a ed.)

Leonen, M. M. (2001). Overview of Philippine environmental laws. Tanggol Kalikasan.

Cita Chicago Style (17a ed.)

Leonen, Marvic M.V.F. Overview of Philippine Environmental Laws. [Metro Manila]: Tanggol Kalikasan, 2001.

Cita MLA (9a ed.)

Leonen, Marvic M.V.F. Overview of Philippine Environmental Laws. Tanggol Kalikasan, 2001.