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McGraw-Hill, 1992
Buku Teks
Sobo, Elisa J., author
Routledge, 2016
Buku Teks
Raeff, Catherine, author
Oxford University Press, 2016
eBooks
Rio Sofwanhadi, author
Faculty of Medicine University of Indonesia, 2001
Artikel Jurnal
McClintic, J. Robert, author
John Wiley & Sons, 1976
Buku Teks SO