Donaldson, Norman
Bowling Green University Popular Press, 1971
Buku Teks
Symons, Julian
British Council and National Book League, 1962
Buku Teks
edited by Roscoe Pound, E.N. Griswold and A.E. Sutherland
Little, Brown, 1964
Buku Teks
Kayman, Martin A.
Macmillan, 1992
Buku Teks
edited by Roscoe Pound, Erwin N. Griswold, Arthur E. Sutherland
Little, Brown, 1964
Buku Teks