Gamboa, S. G. (1977). Instructional materials in communication arts II (English) based on geometry.
Chicago-viite (17. p.)Gamboa, Sabiniano G. Instructional Materials in Communication Arts II (English) Based on Geometry. 1977.
MLA-viite (9. p.)Gamboa, Sabiniano G. Instructional Materials in Communication Arts II (English) Based on Geometry. 1977.
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