Lovelock, Christopher H.
Marketing challenges : cases abd exercises
McGraww-Hill, 1993
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Muzumdar, S.
Yogic exercises
Orient Longmans, 1954
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Case exercises in operation research
edited by Michael J.M. Martin
Wiley-Interscience , 1971
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Lewicki, Roy J.
Negotiation : readings, exercises and cases
McGraw-Hill, 2000
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Ranking task exercises in physics
edited by Thomas L. O'Kuma, David P. Maloney and Curtis J. Hieggelke
Prentice-Hall, 2000
 Buku Teks SO