Bogan, Louise, author
Henry Regnery, 1951
Buku Teks
Gray, Richard, 1944-, author
Longman, 1991
Buku Teks
Hilfer, Tony, author
Longman, 1992
Buku Teks
Dembo, L.S., author
University of California Press, 1966
Buku Teks
edited by Nona Balakian and Charles Simmons
Doubleday, 1963
Buku Teks