Sabah Padi Board. (1978). Sample survey on padi production, main crop, 1977 (districts of Papar and Tuaran. Planning and Evaluation Section, Sabah Padi Board.
Chicago-referens (17:e uppl.)Sabah Padi Board. Sample Survey on Padi Production, Main Crop, 1977 (districts of Papar and Tuaran. Kota Kinabalu, Sabah: Planning and Evaluation Section, Sabah Padi Board, 1978.
MLA-referens (8:e uppl.)Sabah Padi Board. Sample Survey on Padi Production, Main Crop, 1977 (districts of Papar and Tuaran. Planning and Evaluation Section, Sabah Padi Board, 1978.
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