Kimbrough, Vickie J.
Pearson, Prentice Hall, 2006
Buku Teks
Pollack, Robert L.
Lea & Febiger , 1985
Buku Teks
by Walter J. Pelton ...[et al.]
Harvard University Press, 1969
Buku Teks
Berg, Joel H.
Wiley Blackwell, 2009
Buku Teks
William V. Giannobile, Brian A. Burt, Robert J. Genco
Blackwell, 2010
Buku Teks