SPROULL ROBERT L. (1999). SCIENTIST`S TOOLS FOR BUSINESS. UNIVERSITY PRESS.
Chicagoスタイル(17版)引用形式SPROULL ROBERT L. SCIENTIST`S TOOLS FOR BUSINESS. HYDERABAD: UNIVERSITY PRESS, 1999.
MLA(9版)引用形式SPROULL ROBERT L. SCIENTIST`S TOOLS FOR BUSINESS. UNIVERSITY PRESS, 1999.
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