Thiroux, Jacques P. author
Pearson, 2015
Buku Teks
Cambridge University Press, 2015
Buku Teks
edited by Ronald Bayer [and others]
Oxford University Press, 2007
Buku Teks
Thiroux, Jacques P. author
Prentice-Hall, 1995
Buku Teks
Nowak, Norman D.
Praeger, 1970
Buku Teks