Sampson, George, author
University Press, 1949
Buku Referensi
Westland, Peter
English University, 1950.
Buku Teks
Legouis, Emile, author
J.M. Dent and Sons, 1948
Buku Teks
edited, B.J. Whiting .. .[et al.]
Harcourt, Brace & World, 1942
Buku Teks
Otis, William Bradley, author
Barnes & Noble, [c1937]
Buku Teks