Hays, William Lee, 1926-1995
Holt, Rinehart and Winston, 1971
Buku Teks
Freund, John E.
McGraw-Hill, c1966
Buku Teks
Spiegel, Murray R.
McGraw-Hill, 1992
Buku Teks
Spiegel, Murray R.
McGraw-Hill, 1987
Buku Teks
Spiegel, Murray R.
McGraw-Hill, 1961
Buku Teks