Gapusan, F., Horigue, L., & Manalo, D. Socio-economic, production and marketing study, Camalaniugan, Cagayan. Special Studies Division, Ministry of Agriculture.
Chicago-referens (17:e uppl.)Gapusan, F.E, L.T Horigue, och D.P Manalo. Socio-economic, Production and Marketing Study, Camalaniugan, Cagayan. Quezon City: Special Studies Division, Ministry of Agriculture.
MLA-referens (9:e uppl.)Gapusan, F.E, et al. Socio-economic, Production and Marketing Study, Camalaniugan, Cagayan. Special Studies Division, Ministry of Agriculture.
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