Sherry, John C.
Collier Books, 1963
Buku Teks SO
edited, Daniel D. Mcgarry, Clarence L. Hohl
Houghton Miffiln, 1963
Buku Teks SO
edited by J.H. Elliott
Thames and Hudson, 1991
Buku Teks SO
Lindemann, Albert S.
John Wiley & Sons, 2013
Buku Teks SO
Wallbank, T. Walter
Scott, Foresman, 1965
Buku Teks SO