Beer, Stafford
Brain of the firm
John Wiley & Sons, 1981
 Buku Teks
Rugman, Alan M.
International business : firm and environment
McGraw-Hill , 1985
 Buku Teks
Thompson, Arthur A., 1940-
Economics of the firm : theory and practice
Prentice-Hall, 1989
 Buku Teks
Rugman, Alan M.
International business : firm and environment
McGraw-Hill, 1985
 Buku Teks
Grisham, John
The firm : biro hukum
Gramedia Pustaka Utama, 2012
 Buku Teks SO