Devore, Jay L.
Brooks/Cole, Cengage Learning , 2012
Buku Teks
Winkler, Robert L.
Holt, Rinehart and Winston, 1975
Buku Teks
Milton, Janet Susan
McGraw-Hill , 2013
Buku Teks
Hines, William W.
John Wiley & Sons, 1980
Buku Teks
Benjamin, Jack C.
McGraw-Hill, 1970
Buku Teks