Pickle, Hal B.
Goodyear Publishing Company, Inc., 1972
Buku Teks
Reineeke, John A.
Allyn and Bacon, 1974
Buku Teks
Robbins, Paul, author
Wiley-Blackwell, 2014
Buku Teks
Booth, Lawrence D., author
John Wiley & Sons, 2013
Buku Teks
Rugman, Alan M., author
McGraw-Hill, 1985
Buku Teks