edited by G. Goodwin
Cambridge University Press, 1958
Buku Teks
Gossel, Peter, edited
Taschen, 2007
Buku Referensi
Mayer, Frederick, author
American Book Company, 1951
Buku Teks
by James A. Richards ... [et.al.]
Addison-Wesley, 1962
Buku Teks
edited by Allen Cunningham; preface by Robert Maxwell
Routledge, 1998
Buku Teks