Kalijarvi, Thorsten V.
Thomas Y. Crowell, 1954
Buku Teks
Rourke, John T.
McGraw-Hill, 2010
Buku Teks
Andrew Hurrell, Ngaire Woods, Satria Utama S., Diana Arimbi
Fakultas Ekonomi UI, 2001
Buku Teks
Rourke, John T.
McGraw-Hill, 2001
Buku Teks
Kegley, Charles William, Jr.
St. Martin`s Press, 1997
Buku Teks