Philippines Department of Environment and Natural Resources. National Program Coordinating Office. (1990). Policies, memoranda and other issuances on the national forestation program. National Program Coordinating Office, Department of Environment and Natural Resources.
Chicago Style (17. basım) AtıfPhilippines Department of Environment and Natural Resources. National Program Coordinating Office. Policies, Memoranda and Other Issuances on the National Forestation Program. Quezon City: National Program Coordinating Office, Department of Environment and Natural Resources, 1990.
MLA (9th ed.) AtıfPhilippines Department of Environment and Natural Resources. National Program Coordinating Office. Policies, Memoranda and Other Issuances on the National Forestation Program. National Program Coordinating Office, Department of Environment and Natural Resources, 1990.