Jossey-Bass , 2004
Buku Teks
Turner, C.E.
Mosby Comp., 1963
Buku Teks
Clark, Margaret
University of California Press, 1970
Buku Teks
by Walter J. Pelton ...[et al.]
Harvard University Press, 1969
Buku Teks
Streiner, David L.
Oxford University Press, 2015
Buku Teks