Weston, John Fred, 1916-, author
Henry Holt, 1969
Buku Teks
Weston, John Fred, 1916-, author
Dryden Press, 1992
Buku Teks
Weston, J. Fred (John Fred), 1916-
The Dryden Press, 1985
Buku Teks
Bierman, Harold, author
Pitman, 1975
Buku Teks
Engler, George N., author
Business Publications , 1982
Buku Teks