Cree, Laurie
W.B Saunders, 1989
Buku Teks
Skeet, Muriel
Churchill Livingstone , 1980
Buku Teks
[edited by] Catherine L. Gilliss [and others]
Addison-Wesley, 1989
Buku Teks
Foss, Mark
Prentice-Hall, 2000
Buku Teks
Lynch, Virginia A.
Elsevier Mosby, 2011
Buku Teks