Walker, Robert A.
The Dryden Press, 1953
Buku Teks
Lathrap, Donald W.
[T.t.] [T.p.] 1955
Buku Teks
Press, Bill
Redwood Press, 1988
Buku Teks
edited and with a foreword by John Foley, Robert C. Lobdell and Robert Trounson
Mirror Press, 1977
Buku Teks
Glantz, Stanton A., author
McGraw-Hill, 1992
Buku Teks