Aphornsuvan, Thanet (November 2009). "The West and Siam's Quest for Modernity: Siamese Responses to Nineteenth Century American Missionaries". South East Asia Research. 17 (3): 401–431. doi:10.5367/000000009789838468. S2CID147095664.
Aphornsuvan, Thanet (November 2009). "The West and Siam's Quest for Modernity: Siamese Responses to Nineteenth Century American Missionaries". South East Asia Research. 17 (3): 401–431. doi:10.5367/000000009789838468. S2CID147095664.