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Prentice-Hall, 1994
Buku Teks
Besterfield, Dale H., author
Prentice-Hall, 1979
Buku Teks
Besterfield, Dale H., author
Pearson Education, 2004
Buku Teks
Susi Setiawaty, author
Universitas Indonesia, 1998
UI - Tesis (Membership)
Mulyanto, author
1997
UI - Skripsi (Membership)