Emerald, 2016
eBooks
Hernon, Peter, author
Ablex, 1990
Buku Teks
Husted, Gladys L., author
Mosby Year Book, 1989
Buku Teks
Husted, Gladys L., author
Mosby , 1995
Buku Teks
edited by Maureen D. Raynor, Jayne E. Marshall and Amanda Sullivan
Elsevier, 2005
Buku Teks