Taylor, Griffith, author
Methuen, 1951
Buku Teks
Taylor, Griffith, author
Methuen, 1949
Buku Teks
Jarvis, Helen, author
Prentice-Hall, 2001
Buku Teks
Lefebvre, Henri, author
University of Minnesota Press, 2003
Buku Teks
edited by William A. Robson
Macmillan, 1955
Buku Teks