Solomons, T. W. Graham, author
John Wiley & Sons, 1978
Buku Teks
McMurry, John, author
Cole Publ.Com, 1992
Buku Teks
Carey, Francis A., 1937-, author
McGraw-HIll, 2003
Buku Teks
Solomons, T. W. Graham, author
John Wiley & Sons, 1988
Buku Referensi
Carey, Francis A., 1937-
McGraw-Hill , 2003
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