Diana Mutiah, author
kencana Prenada Media, 2010
Buku Teks
Donovan, Frank R., author
Thomas Y. Crowell, 1968
Buku Teks
Reni Akbar Hawadi, author
Grasindo, 2001
Buku Teks
Gramedia, 1999
Buku Teks
Gargiulo, Richard M., author
Wadsworth and Cengage Learning, 2011
Buku Teks