Seitz, William C.
Doubleday, 1961
Buku Teks
Haqq, Fakir Abdul Bratakesawa
Edmonton Hurtig 1983
Buku Teks
Dawson, R. MacGregor
Universitas of Toronto Press , 1958
Buku Teks
chapters by Edgar McInnis ... [et al.] ; edited by George W. Brown
University of California Press, 1953
Buku Teks
edited by George W. Brown
University of California Press, 1954
Buku Teks