Nash, Ernest, author
Frederick A. Praeger, [1961-62]
Buku Referensi
Satyawati Sulaiman, author
Archaeological Foundation, 1976
Buku Teks
Scholberg, Henry, author
Switzerland Inter Documentation, 1987
Buku Referensi
Robinson, O.F.
Routledge, 1994
Buku Teks
New York Oxford University Press 1998,
Buku Referensi