Walker, William, author
Cambridge University Press, 2009
eBooks
Houghton, Walter E.
Houghton Mifflin, 1959
Buku Teks
Pluto Press, 1994
Buku Teks
Sedgwick, Eve Kosofsky
Columbia University Press, 1985
Buku Teks
Hubbard, L. Ron, 1911-1986, author
Bridge Publications, Inc., 2012
Buku Referensi