Olgado, S. (1979). White potato socio-economic and marketing study: Philippines. Special Studies Division, Dept. of Agriculture.
Čikaški stil citiranja (17. izdanje)Olgado, S.S. White Potato Socio-economic and Marketing Study: Philippines. Quezon City: Special Studies Division, Dept. of Agriculture, 1979.
MLA način citiranja (9. izdanje)Olgado, S.S. White Potato Socio-economic and Marketing Study: Philippines. Special Studies Division, Dept. of Agriculture, 1979.
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