Waugh, Anne
Churchill Livingstone , 2006
Buku Teks SO
Wilson, Kathleen J. W.
Churchill Livingstone , 1996
Buku Teks SO
Waugh, Anne
Churchill Livingstone, 2007
Buku Teks SO
Waugh, Anne
Churchill Livingstone, 2010
Buku Teks SO
Marieb, Elaine Nicpon, 1936-
Pearson Benjamin Cummings, 2008
Buku Teks SO