Gamboa, S. G. (1977). Instructional materials in communication arts II (English) based on geometry.
芝加哥风格引文Gamboa, Sabiniano G. Instructional Materials in Communication Arts II (English) Based on Geometry. 1977.
MLA引文Gamboa, Sabiniano G. Instructional Materials in Communication Arts II (English) Based on Geometry. 1977.
警告：这些引文格式不一定是100％准确.