Green, Arnold W., author
McGraw-Hill, 1975
Buku Teks
Bardbury, Mary
Routledge, 1999
Buku Teks
Sampson, Edward G., author
John Wiley & Sons, 1976
Buku Teks
Moghaddam, Fathali M., author
W.H. Freeman, 1993
Buku Teks
edited by Agnieszka Golec de Zavala and Aleksandra Cichocka
Palgrave Macmillan, 2013
Buku Teks