Ballard, G.A.
London Duckworth 1927
Buku Teks
Meal, P
London Blackie [t.th.]
Buku Teks
by Alison Rieser ... [and others]
West Academic Publishing, 2013
Buku Teks
Bowman, Larry W., author
Westview Press, 1991
Buku Teks
Mei, Chiang C., author
John Wiley & Sons, 1983
Buku Teks