RIES AL. (1996). FOCUS: THE FUTURE OF YOUR COMPANY DEPENDS UPON IT. HARPER COLLINS PUBLISHERS.
Chicagoスタイル(17版)引用形式RIES AL. FOCUS: THE FUTURE OF YOUR COMPANY DEPENDS UPON IT. USA: HARPER COLLINS PUBLISHERS, 1996.
MLA(9版)引用形式RIES AL. FOCUS: THE FUTURE OF YOUR COMPANY DEPENDS UPON IT. HARPER COLLINS PUBLISHERS, 1996.
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