Whittington, Ray, 1948-, author
Mc Graw-Hill, Irwin, 2000
Buku Teks
Flesher, Dale L., author
John Wiley & Sons, 1982
Buku Teks
by Philip L. Defliese ... [and others]
John Wiley & Sons, 1987
Buku Teks
Johnson, James T., author
South-Western Publishing, 1960
Buku Teks
Johnson, James T., author
South-Western Publishing, 1965
Buku Teks