- Essays on Literature and Society in Southeast Asia 1981 Page 305 "The "Nam-quốc sơn-hà" poem had the form of an oracle"
- Nguyễn Đức Sự Some Features on Vietnamese Buddhism in the Lý Dynasty Religious Studies Review, No. 02-2010 Institute of Religious Studies, Vietnamese Academy of Social Sciences 2011 "Besides the well-known works of celebrities and of the Lý court as Chiếu dời đô (Royal edict on the transfer of the capital), Nam quốc sơn hà (Mountains and Rivers of the empire of the South), Văn lộ bố khi đánh trống, Di chiếu lúc lâm chung (King's last will at point of death), etc. There were many Zen poems in the literature of the Lý dynasty. Almost poets and writers in the Lý dynasty were Zen masters."
- Patricia M. Pelley Postcolonial Vietnam: New Histories of the National Past 2002 Page 268 "The relevant works are Nam quốc sơn ha, Lý Thường Kiệt's famous affirmation of Vietnamese identity; Hịch tướng sĩ, the plea from Trần Hưng Ðạo to fight against the Mongols; Quốc ngữ thi tập, Chu Văn An's collection of poems in the national language..."