Chaplin, Charles, author
Chivers, 1964
Buku Teks
Wachner, Clarence W., author
Macmillan, 1963
Buku Teks
edited by Janet Moyles
McGraw-Hill, 2007
Buku Teks
Barnett, A. Doak (Arthur Doak), author
Frederick A. Praeger, 1965
Buku Teks
Rose, Janet, author
Open University Press, 2012
Buku Teks