Wylie, E. Benjamin, author
McGraw-Hill, 1978
Buku Teks
editor, James R. Newman
Harper & Row, 1963
Buku Referensi
Bullis, L. Harold
Westview Press, 1985
Buku Teks
Bullis, L. Harold
Westview Press, 1985
Buku Teks
Boi, Luciano, author
[, Springer], 2012
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