Rourke, John T.
McGraw-Hill, 2010
Buku Teks SO
Andrew Hurrell, Ngaire Woods, Satria Utama S., Diana Arimbi
Fakultas Ekonomi UI, 2001
Buku Teks SO
Blackburn, Glenn
St. Martin's, 1985
Buku Teks SO
Kalijarvi, Thorsten V.
Thomas Y. Crowell, 1954
Buku Teks SO
Rourke, John T.
McGraw-Hill, 2001
Buku Teks SO