Webster, Murray, editor
Academic Press, 2014
eBooks
Adams, Roger, 1889-1971, author
McMillan, 1963
Buku Teks
Sherman, Alan, author
Houghton Mifflin, 1976
Buku Teks
Crane, John, author
Prentice-Hall, 1980
Buku Teks
Bettelheim, Frederick A., author
Thomson, Brooks/Cole, 2007
Buku Teks