Hargreaves, Kenneth M., author
Quintessence Publishing , 2012
Buku Teks
Hilgard, Ernest R. (Ernest Ropiequet), 1904-2001
Applenton-Century-Crofts, Inc., 1956
Buku Teks
The Ronald Press Company, 1953
Buku Teks
Routledge, 2014
Buku Teks
Wiley Blackwell, 2013
Buku Teks