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1.
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[Heidelberg, Germany] : [Springer], 1998.
English | 34 DE |
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2.
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Lagos : Maglink International, 1998.
English | N 40 OLU.N |
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3.
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Abuja : Nigerian Copyright Commission, 2002.
Portuguese | N 40 ASE.D |
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4.
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Concord, Ont. : Irwin Law, 1997.
Portuguese | F 40 VAV.I |
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5.
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Abuja, Nigeria : Nigerian Copyright Commission, 2004.
English | N 40 ASE.N |
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