Laurence, D.R., author
Churchill Livingstone, 1997
Buku Teks
Gajewski, Thomas F., editor
Springer, 2012
eBooks
edited by Hary Beckman
Year Book Publishers, 1951
Buku Teks
Edmunds, Marilyn W.
Elsevier/Mosby, 2013
Buku Teks
Banker, Gilbert S., author
J.B. Lippincott, 1982
Buku Teks