Womack, B. (2012). "Asymmetry and China's Tributary System". The Chinese Journal of International Politics. 5 (1): 37–54. doi:10.1093/cjip/pos003. ISSN1750-8916.
jstor.org
Baldanza, Kathlene (2014). "Perspectives on the 1540 Mac Surrender to the Ming". Asia Major. 27 (2): 115–146. JSTOR44740553.
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Womack, B. (2012). "Asymmetry and China's Tributary System". The Chinese Journal of International Politics. 5 (1): 37–54. doi:10.1093/cjip/pos003. ISSN1750-8916.