edited by Arthur S. Banks, Alan J. Day, Thomas C. Muller
CSA Publications, 1997
Buku Referensi
Schapiro, J. Salwyn [Jacob Salwyn], 1879-1973
McGraw-Hill, 1950
Buku Teks
Kirshner, Jonathan
Princenton University Press, 1995
Buku Teks SO
Adem, Seifudein
Routledge, Taylor & Francis Group, 2018
Buku Teks SO
Ethridge, Marcus E.
Wadsworth and Cengage Learning, 2013
Buku Teks SO