Christ, Henry
Lexington, 1982
Buku Teks
Gramley, Stephan, author
Routledge, 2004
Buku Teks
Frank, Marcella, author
Prentice-Hall, 1972
Buku Teks
Fowler, H. W. (Henry Watson), 1858-1933, author
Oxford University Press, 1950 ; 1952
Buku Referensi
Fowler, H. W. (Henry Watson), 1858-1933, author
Oxford University Press, 1965
Buku Referensi