Wilson, Paul R., author
George Allen and Unwin, 1982
Buku Teks
Brower, Anne C., author
Elsevier/Saunders, 2012
Buku Teks
Bennett, Lerone
Penguin Books, 1969
Buku Teks
Berndt, Ronald M., author
F.W. Cheshire, 1951
Buku Teks
Beardsworth, John, author
ILEX, 2012
Buku Teks