Jamie V. Trapp, Tomas Kron, editor
Taylor & Francis Group, 2008
Buku Teks
Whaites, Eric
Churchill Livingstone, 2013
Buku Teks
Dyson, N.A.
John Wiley & Sons, 1981
Buku Teks
Hall, Eric J.
Wolters Kluwer, 2012
Buku Teks
Whaites, Eric
Churchill Livingstone Elsevier, 2014
Buku Teks