Christie, Agatha, 1890-1976
N or M = N atau M
Gramedia Pustaka Utama, 2017
 Buku Teks SO
Buchanan, James M.
The collected works of James M. Buchanan vol. 13 : politics as public choice
Liberty Fund, 2000
 Buku Referensi
Bryce, Murray D.
Policies and methods for industrial development
McGraw-Hill, 1965
 Buku Teks
Livingstone, James M.
The international enterprise / James M. Livingstone
Associated Business Programmes, 1975
 Buku Teks
21 Debated : issues in world politics / editors, Gregory M. Scott, Randall J. Jones, Jr., Louis S. Furmanski
Pearson-Prentice-Hall, 2004
 Buku Teks SO