HELLER ROBERT. (1998). MOTIVATING PEOPLE. DORLING KINDERSLEY.
Chicagoスタイル(17版)引用形式HELLER ROBERT. MOTIVATING PEOPLE. LONDON: DORLING KINDERSLEY, 1998.
MLA(9版)引用形式HELLER ROBERT. MOTIVATING PEOPLE. DORLING KINDERSLEY, 1998.
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APA(7版)引用形式