Steven Maddocks, Dale Anderson, Jane Bingham, Peter Chrisp, Christopher Gavett: Exploring the Middle Ages, s. 519. Marshall Cavendish Corporation, 2006. ISBN 0-7614-7613-XTeoksen verkkoversio.
Tan Ta Sen, Dashen Chen: Cheng Ho and Islam in Southeast Asia, s. 170, 291. Institute of Southeast Asian Studies, 2000. ISBN 981-230-837-7Teoksen verkkoversio.
China China archaeology and art digest, Volume 3, Issue 4, s. 29. Art Text (HK) Ltd, 2000. Teoksen verkkoversio.
Alastair Iain Johnston: Cultural realism: strategic culture and grand strategy in Chinese history, s. 223. Princeton University Press, 1998. Teoksen verkkoversio.
David Chan-oong: China rising: peace, power, and order in East Asia, s. 28. Colombia University Press, 2007. Virhe: Virheellinen ISBN-tunnisteTeoksen verkkoversio.
Chan Hok-lam: Legitimating Usurpation: Historical Revisions under the Ming Yongle Emperor (r. 1402–1424)]". The Legitimation of New Orders: Case Studies in World History. Chinese University Press, 2007. Virhe: Virheellinen ISBN-tunnisteTeoksen verkkoversio.