Fairchild, Fred Rogers, author
Macmillan, 1954
Buku Teks
Benham, Frederic, author
Pitman, 1947
Buku Klasik
Blodgett, Ralp H., author
Rinehart & Company, 1951
Buku Teks
McConnell, Campbell R., author
McGraw-Hill, Irwin, 2002
Buku Teks
Baumol, William J., author
Harcourt, Brace Jovanovich College Publishers, 1985
Buku Teks