Cita APA

Philippines. Department of Environment and Natural Resources. Planning and Policy and Studies Office. (1990). A compilation of environment and natural resources policy issuances. DENR.

Citación estilo Chicago

Philippines. Department of Environment and Natural Resources. Planning and Policy and Studies Office. A Compilation of Environment and Natural Resources Policy Issuances. Quezon City: DENR, 1990.

Cita MLA

Philippines. Department of Environment and Natural Resources. Planning and Policy and Studies Office. A Compilation of Environment and Natural Resources Policy Issuances. DENR, 1990.