Wynne, Mervyn Llewelyn, Triad and tabut: a survey of the origin and diffusion of Chinese and Mohamedan secret societies in the Malay Peninsular, 1800-1935. Singapore, 1941
Burma. Note on the rules concerning the extradition of criminals to and from Siam and China and the issue of passports to Siam and China. Rangoon, 1910