Gropper, G. L. (1991). Text displays: Analysis and systematic design. Educational Technology Publications.
Chicagoスタイル(17版)引用形式Gropper, George Leonard. Text Displays: Analysis and Systematic Design. Englewood Cliffs, N.J.: Educational Technology Publications, 1991.
MLA(8版)引用形式Gropper, George Leonard. Text Displays: Analysis and Systematic Design. Educational Technology Publications, 1991.
警告: この引用は必ずしも正確ではありません.