Stephen, Leslie, 1832-1904, author
University Paperbacks, 1963
Buku Teks
Plumb, J.H. (John Harold), 1911-, author
Penguin Books , 1951
Buku Teks
Richetti, John, author
John Wiley & Sons, 2017
Buku Teks
edited by Clarence L. Barnhart
Appleton-Century-Crofts, 1956
Buku Referensi
Trevelyan, George Macaulay, 1876-1962, author
Longmans, Green, 1951
Buku Teks