edited by Lawrence S. Wringtsman
Wadsworth, 1968
Buku Teks
Richard D. Irwin , 1969
Buku Teks
Hailstones, Thomas J., author
South-Western Publishing, 1985
Buku Teks
edited by Hans F. Crombag and Dato N. De Gruijter
Mouton, 1974
Buku Teks
Sullivan, Thomas J., 1944-, author
John Wiley & Sons, 1984
Buku Teks