Silvoso, Joseph A., author
Ohio South-Western, 1965
Buku Teks
Mulyadi, author
Salemba Empat, 2002
Buku Teks
Arens, Alvin A., author
Salemba Empat, 1996
Buku Teks
Ruchyat Kosasih
Ruchko, 1985
Buku Teks
Culey, Ray T., author
South-Western Publishing, 1953
Buku Teks