Weston, Glen E.
West Publishing CO, 1992
Buku Teks
Ramaswamy, M.
Stanford University Press , [Date of publication not identified]
Buku Teks
Ramaswamy, M.
Endang Djakarta, [19--?]
Buku Klasik
Hasibuan, H.D. Effendy
Program Pascasarjana Universitas Indonesia, 2003
Buku Teks
Garrison, Marsha
Thomson/West, 2009
Buku Teks