3Alexander Woodside, Vietnam and the Chinese Model: A Comparative Study of Nguyen and Ch'ing Civil Government in the First Half of the Nineteenth Century, Boston: Harvard University Press, 1988.
4Han Xiaorong, ' The Present Echoes of the Ancient Bronze Drum: Nationalism and Archeology in Modern Vietnam and China' , Explorations in Southeast Asian Studies, Vol. 2, No. 2, 1998.
5Leopold Cadiere, Croyances et practiques religieuses des Vietnamiens, Saigon: Societe des etudes Indochinoises, 1958.
6Dao Duy Anh, Viet Nam Van hoa Su cuong (A Sketch of Vietnamese Cultural History), 1938 (reprinted 2002 ), Hue: Nxb Van hoa, 2002, pp. 243 - 247.
7Dao Duy Anh, 'Influence of Confucianism in Vietnam' , 1938 (reprinted 1994), Vietnamese .Studies, No. 1, 1994, pp. 23 -25.
8Phan Ke Binh, Vie t Nam phong tuc (Vietnamese Customs), Ho Chi Minh: TP Ho Chi Minh, 1990, pp. 25 -26.
9Dao Duy Anh, Viet Nam Van hoa Sa cuong ( A Sketch of Vietnamese Cultural History) , Hue: Nxb Van hoa, 2002, p. 245.
10Toan Anh, Nep Cu: Ttn nguong Viet nam ( Traditional way of life: Vietamese Beliefs), Ho Chi Minh: Nxb TP , 1966 ( reprinted 1992) .