Jones, Vincent
Summy-Birchard Publishing Company, 1941
Buku Teks
Andy Bennett, Steve Waksman
SAGE, 2015
Buku Teks
Dallin, Leon
WM. C. Brown Co. Pub., 1965
Buku Teks
Peterson, Veronica, author
Elsevier Mosby, 2013
Buku Teks
Mandl, Matthew, author
Prentice-Hall, 1967
Buku Teks