Hallahan, Daniel P., author
Allyn and Bacon, 1994
Buku Teks
Conant, James B., author
Oxford University Press, 1946
Buku Teks
edited by J. C. M. M Moonen, H.E. Wuite-Harmsma
North-Holland, 1984
Buku Teks
editor, Burton R. Clark
Pergamon Press, 1992
Buku Referensi
Burton R. Clark, Guy R. Neave, editors-in-cheif
Pergamon Press, 1992
Buku Referensi