Lattimore, Owen, 1900-
Little, Brown, 1950
Buku Teks
edited by Saw Swee-Hock and John Wong
Institute of Southeast Asian Studies, 2007
Buku Teks
Sleeman, John H.C.
Alert Printing, 1933
Buku Teks
Singapore School of Accounting, Faculty of Accounting & Business Administration and Institute of Systems Science, National University of Singapore 1986,
Buku Teks
Fukutake, Tadashi
University of Tokyo Press, 1967
Buku Teks