Philippines. Department of Environment and Natural Resources. (1997). Procedural manual for DAO 96-37. The Department.
Čikaški stil citiranja (17. izdanje)Philippines. Department of Environment and Natural Resources. Procedural Manual for DAO 96-37. Quezon City: The Department, 1997.
MLA način citiranja (9. izdanje)Philippines. Department of Environment and Natural Resources. Procedural Manual for DAO 96-37. The Department, 1997.
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