Johnson, Orlen N., author
Pearson Prentice Hall, 2007
Buku Teks
Thomson, Evelyn M., author
Pearson, 2012
Buku Teks
Hatrick, Carol Dixon, author
Saunders : Elsevier, cop, 2016
Buku Teks
Whaites, Eric, author
Churchill Livingstone, 2013
Buku Teks
Collins, W.J.M., author
Butterworth-Heinemann, 1993
Buku Referensi