recovered by Sir Aurel Stein; described by Fred H. Andrews
Oxford Universityu Press, 1948
Buku Referensi
Duncan-Kemp, A. M
Angus and Robertson, 1961
Buku Teks
Varinnia, author
Sekolah Kajian Stratejik dan Global Universitas Indonesia, 2023
UI - Tesis (Membership)
Serrao, Vitor, author
Instituto de Cultura e Lingua Portuguesa, 1991
Buku Teks
Goncalves, Rui Mario, author
Instituto de Cultura e Lingua Portuguesa, 1991
Buku Teks