McCormick, Charles T. (Charles Tilford), 1889-1963
Foundation Press, 1976
Buku Teks
Louisell, David W.
Foundation Press, 1979
Buku Teks
Gunther, Gerald
Foundation Press, 1970
Buku Teks
Kauper, Paul G.
Little, Brown, 1966
Buku Teks SO
Barrett, Edward L.
Foundation Press, 1977
Buku Teks SO