Allen, Thomas O.
Oil & Gas Consultans International, 1978
Buku Teks SO
Scalapino, Robert A.
Institute of East Asian Studies, University of California, 1983
Buku Teks SO
edited by Philip M. Hauser and Leo F. Schnore
John Wiley & Sons, 1965
Buku Teks SO
Caminos, Horacio
MIT Press, 1980
Buku Teks SO
Eka Kurniawan
Kepustakaan Populer Gramedia, 2016
Buku Teks SO