Raya, D. E. A. (2010). Strategic and operational issues in the Philippine palm oil industry. College of Business Administration, University of the Philippines.
Čikaški stil citiranja (17. izdanje)Raya, Danilo Erwin A. Strategic and Operational Issues in the Philippine Palm Oil Industry. Quezon City: College of Business Administration, University of the Philippines, 2010.
MLA način citiranja (9. izdanje)Raya, Danilo Erwin A. Strategic and Operational Issues in the Philippine Palm Oil Industry. College of Business Administration, University of the Philippines, 2010.
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