Plumb, John Harold, 1911-
Penguin Books , 1951
Buku Teks
Richetti, John
John Wiley & Sons, 2017
Buku Teks
edited by Raymond Hickey
Cambridge University Press, 2010
eBooks
edited by Clarence L. Barnhart
Appleton-Century-Crofts, 1956
Buku Referensi
Thomson, Thomas
Cambridge University Press, 2012
eBooks