Koo, Mme Wellington; Taves, Isabella (1975). No Feast Lasts Forever (dalam bahasa Inggris). New York: Quadrangle/New York Times Book Company. ISBN9780812905731.
Salmon, Claudine (1991). "A Critical View of the Opium Farmers as Reflected in a Syair by Boen Sing Hoo (Semarang, 1889)". Indonesia: 25–51. doi:10.2307/3351253. JSTOR3351253.
Salmon, Claudine (1991). "A Critical View of the Opium Farmers as Reflected in a Syair by Boen Sing Hoo (Semarang, 1889)". Indonesia: 25–51. doi:10.2307/3351253. JSTOR3351253.