Roolvink, R.
Djambatan, 1957
Buku Referensi
Davies, Cuthbert Collin, 1896-1974
Oxford University Press, 1959
Buku Teks
J.C.R. Camm, John McQuilton, editor
Fairfax, Syme & Weldon Associates, 1987
Buku Referensi
Davies, Cuthbert Collin, 1896-1974
Oxford University Press, 1959
Buku Teks
Channon, John
Penguin Books, 1995
Buku Referensi