HAGEMANN GISELA. (1994). THE MOTIVATION MANUAL. MULTI-TECH PUBLICATIONS CO.
Chicagoスタイル(17版)引用形式HAGEMANN GISELA. THE MOTIVATION MANUAL. MUMBAI: MULTI-TECH PUBLICATIONS CO, 1994.
MLA(9版)引用形式HAGEMANN GISELA. THE MOTIVATION MANUAL. MULTI-TECH PUBLICATIONS CO, 1994.
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