European Productivity Agency. (1958). Simplification, standardisation, specialisation: Case studies in variet reduction. European Productivity Agency of OEEC.
Chicagoスタイル(17版)引用形式European Productivity Agency. Simplification, Standardisation, Specialisation: Case Studies in Variet Reduction. Paris: European Productivity Agency of OEEC, 1958.
MLA(8版)引用形式European Productivity Agency. Simplification, Standardisation, Specialisation: Case Studies in Variet Reduction. European Productivity Agency of OEEC, 1958.
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