Grundy, Fred, author
H.K. Lewis, 1968
Buku Teks
Simon & Schuster, 1997
Buku Teks
Edge, Raymond S., author
Cengage Learning, 2018
Buku Teks
Porter-O`Grady, Tim, author
Mosby, 1998
Buku Teks
MacStravic, Robin E. Scott
Aspen Systems Corp., 1977
Buku Teks