Haskins, Mark E., author
McGraw-Hill/Irwin, 2000
Buku Teks
Chaudhry, Asif, author
New Jersey : Wiley, 2016
Buku Teks
Brown, Lawrence D., author
Business Publications, 1987
Buku Teks
Young, David W., author
Crimson Press Curriculum Center, 1994
Buku Teks
Bellandi, Francesco, author
Emerald, 2018
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