Willsmore, A. (1950). Product development and design. Sir Isaac pitman.
シカゴスタイル引用形Willsmore, A.W. Product Development and Design. London: Sir Isaac pitman, 1950.
MLA引用形式Willsmore, A.W. Product Development and Design. Sir Isaac pitman, 1950.
警告: この引用は必ずしも正確ではありません.