Shaw, Edward S.
Richard D. Irwin, 1950
Buku Teks
Fisher, Douglas, author
Richard D. Irwin , 1980
Buku Teks
Kreps, Cliften H., author
Ronald Press, 1967
Buku Teks
Day, A. C. L.
Oxford University Press, 1960
Buku Teks
edited by Warren L. Smith and Ronald L. Teigen
Ill R. D. Irwin , 1970
Buku Teks