Lovelock, Christopher H.
Marketing challenges : cases and exercises
McGraw-Hill, 1985
 Buku Teks SO
Muzumdar, S.
Yogic exercises
Orient Longmans, 1954
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Al-Ashri, Abd al-Salam
<'>Abd al-Latif al-Baghdadi <'Abd al-Salam Al-'Ashri>
Kairo Dar al-Ma'arif [t.th.]
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Abd Allah, Muhammad Abd al-Hakim
Min 'Ajli Waladi / Muhammad Abd al-Hakim Abd Allah
Maktabat Misr, 1957
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Case exercises in operation research
edited by Michael J.M. Martin
Wiley-Interscience , 1971
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