Ullmann, Leonard P., author
Prentice-Hall, 1975
Buku Teks
Page, James Daniel, author
Tata McGraw-Hill, 1994
Buku Teks
Halgin, Richard P., author
Harcourt Brace Jovanovich College, 1993
Buku Teks
Barlow, David H., author
Connecticut Cengage Learning, 2015
Buku Teks
Comer, Ronald J
W.H. Freeman, 1998
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