Winstedt, R. O.; Wilkinson, R. J. (June 1934). "A History of Perak". Journal of the Malaysian Branch of the Royal Asiatic Society. 12 (1). Malaysian Branch of the Royal Asiatic Society: 9. JSTOR41559831.
Winstedt, R. O.; Wilkinson, R. J. (June 1934). "A History of Perak". Journal of the Malaysian Branch of the Royal Asiatic Society. 12 (1). Malaysian Branch of the Royal Asiatic Society: 6. JSTOR41559831.
Winstedt, R. O.; Wilkinson, R. J. (June 1934). "A History of Perak". Journal of the Malaysian Branch of the Royal Asiatic Society. 12 (1). Malaysian Branch of the Royal Asiatic Society: 9. JSTOR41559831.
Winstedt, R. O.; Wilkinson, R. J. (June 1934). "A History of Perak". Journal of the Malaysian Branch of the Royal Asiatic Society. 12 (1). Malaysian Branch of the Royal Asiatic Society: 125. JSTOR41559831.
Winstedt, R. O.; Wilkinson, R. J. (June 1934). "A History of Perak". Journal of the Malaysian Branch of the Royal Asiatic Society. 12 (1). Malaysian Branch of the Royal Asiatic Society: 7. JSTOR41559831.
Winstedt, R. O.; Wilkinson, R. J. (June 1934). "A History of Perak". Journal of the Malaysian Branch of the Royal Asiatic Society. 12 (1). Malaysian Branch of the Royal Asiatic Society: 10. JSTOR41559831.
Winstedt, R. O.; Wilkinson, R. J. (June 1934). "A History of Perak". Journal of the Malaysian Branch of the Royal Asiatic Society. 12 (1). Malaysian Branch of the Royal Asiatic Society: 8. JSTOR41559831.
Winstedt, R. O.; Wilkinson, R. J. (June 1934). "A History of Perak". Journal of the Malaysian Branch of the Royal Asiatic Society. 12 (1). Malaysian Branch of the Royal Asiatic Society: 61–62. JSTOR41559831.
Winstedt, R. O.; Wilkinson, R. J. (June 1934). "A History of Perak". Journal of the Malaysian Branch of the Royal Asiatic Society. 12 (1). Malaysian Branch of the Royal Asiatic Society: 122–123. JSTOR41559831.
Winstedt, R. O.; Wilkinson, R. J. (June 1934). "A History of Perak". Journal of the Malaysian Branch of the Royal Asiatic Society. 12 (1). Malaysian Branch of the Royal Asiatic Society: 122–123. JSTOR41559831.