Dinitto, Diana M., author
Prentice-Hall, 2000
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Dinitto, Diana M., author
Pearson, 2012
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Doblstein, Andrew W., author
Prentice-Hall, 1980
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Dobelstein, Andrew W., author
Thomson Brooks/Cole, 2003
Buku Teks
Dobelstein, Andrew W., author
Wadsworth, 2003
Buku Teks