Gildersleeve, Thomas R., author
Prentice-Hall, 1971
Buku Teks
Orilia, Lawrence S., author
McGraw-Hill, 1982
Buku Teks
Rory Andharta, author
Universitas Indonesia, 2011
UI - Tesis (Open)
Popkin, Gary S., author
Mifflin Company, 1981
Buku Teks
Burian, Barbara J., author
Prentice-Hall, 1982
Buku Teks