De Guzman, R. P. (1970). A review of the regional delineation in the Philippines. Cooperative Regional Development Project, National Development Research Center.
Čikaški stil citiranja (17. izdanje)De Guzman, Raul Policarpio. A Review of the Regional Delineation in the Philippines. Quezon City: Cooperative Regional Development Project, National Development Research Center, 1970.
MLA način citiranja (9. izdanje)De Guzman, Raul Policarpio. A Review of the Regional Delineation in the Philippines. Cooperative Regional Development Project, National Development Research Center, 1970.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.