Lee, David, author
Routledge, 1995
Buku Teks
Persell, Caroline Hodges, author
Harper & Row, 1984
Buku Teks
Schaefer, Richard T, author
McGraw-Hill, 2011
Buku Teks
Ferrante, Joan, author
Cengage Learning, 2016
Buku Teks
Green, Bryan S. R.
Pergamon Press , 1966
Buku Teks