Findlay III, M. Chapman
Prentice-Hall, 1970
Buku Teks
Weston, John Fred, 1916-, author
Dryden Press, 1992
Buku Teks
Weston, J. Fred (John Fred), 1916-
The Dryden Press, 1985
Buku Teks
R.D. Irwin, 1985
Buku Teks
Ross, Stephen A., author
Richard D. Irwin, 1990
Buku Teks