Pamela G. Reed, Nelma C. Shearer, Leslie H. Nicoll, editor
Lippincot, 2004
Buku Teks
Maclennan & Petty, 2000
Buku Teks
edited by John Tingle and Alan Cribb
Blackwell, 2007
Buku Teks
Johnstone, Megan-Jane, author
W.B. Saunders , 1994
Buku Teks
Lippincot, 1997
Buku Teks