Greer, Thomas V.
Macmillan, 1975
Buku Teks
Staud, Thomas A
Prentice-Hall, 1970
Buku Teks
Hansen, Harry L., author
Richard D. Irwin, 1968
Buku Teks
Hansen, Harry L., author
Richard D. Irwin, 1964
Buku Teks
Hansen, Harry L., author
Richard D. Irwin, 1956
Buku Teks