Crane, Burton
Simon and Schuster , 1959
Buku Teks
Krow, Harvey A.
Random House , 1969
Buku Teks SO
Anderson, Frank Russel
John Wiley & Sons, 1978
Buku Teks SO
Pierce, Phyllis S.
Irwin, 1996
Buku Referensi
translated by Edward L. Greenfield & Charles L. Mee, Jr
American Heritage Press, 1969.
Buku Teks SO