Chhalotra, G.P.,
Khanna, 1980
Buku Teks
Kasap, S.O
McGraw-Hill, 2006
Buku Teks
Beaty, Wayne H., editor
McGraw-Hill Publishing Company, 1990
Buku Referensi
Zetha Arvay
2014
UI - Skripsi (Membership)
Callister, William D., Jr., 1940-
John Wiley & Sons, 2008
Buku Teks