De Yro, T. B. (1976). Problems of industrial arts instruction in the Division of Cagayan I [microform]. Photoduplication Service. University of the Philippines Library.
Chicagoスタイル(17版)引用形式De Yro, Tomas Baluyan. Problems of Industrial Arts Instruction in the Division of Cagayan I [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1976.
MLA(9版)引用形式De Yro, Tomas Baluyan. Problems of Industrial Arts Instruction in the Division of Cagayan I [microform]. Photoduplication Service. University of the Philippines Library, 1976.
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