Thierauf, Robert J., author
John Wiley & Sons, 1980
Buku Teks
Awad, Elias M., author
Prentice-Hall International, 1980
Buku Teks
Maurer, H.A., author
Prentice-Hall, 1972
Buku Teks
Edwards, Perry, author
Wadsworth, 1979
Buku Teks
Awad, Elias M., author
Prentice-Hall, 1971
Buku Teks