Regoli, Robert M., author
Jones and Bartlett Publishers, 2010
Buku Teks
Siegel, Larry J., 1959-, author
Wadsworth and Cengage Learning, 2013
Buku Teks
Siegel, Larry J., 1959-, author
Wardsworth, 2011
Buku Teks
Sheley, Joseph F., author
Wadsworth, 1987
Buku Teks
edited by K. Jaishnakar
CRC Press, 2011
Buku Teks