1.
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Buenos Aires : UNESCO, c1993.
Spanish | N 40 LIP.D(S) |
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2.
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New York : J. Wiley & Sons, c2001. Second edition.
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3.
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Redfern, N.S.W. : Australian Copyright Council, 1998.
English | N 13 FIT.C (1998) |
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4.
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London : Butterworths, 1989. Second edition.
English | N 13 STE.I 1989 |
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5.
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Paris : United Nations Educational, Scientific and Cultural Organization, 1981.
English | N 13 UNESCO |
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