พระปรีชาญาณด้านภาษาในการตั้งนามสกุลของพระบาทสมเด็จพระมงกุฎเกล้าเจ้าอยู่หัว

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Writers : From the Ith Century to the Early XXth Century.) In lan thu hai, co sua chua, bo sung. (2nd. ed.) Hai-phong, 1971.

Tran Trong Kim. Viet Nam Su Luoc. (Outline History of Viet Nam.) In Ian thu tu, sua chua can than. ( 4th. ed.) Saigon : Nha Xuat Ban Tan Viet-Hanoi, 1951.

Tran Van Giap. Tim Hieu Kho Sach Han Nom : Nguon Tu Lieu Van Hoc Su Hoc Viet Nam. (A Research on the Treasure of Han Nom : Origins of Documents of Vietnamese Literature and History.) Hai tap. (2 vols.) Hanoi : Nha Xuat Ban Khoa Hoc Xa Hoi, 1990.

Uy Ban Khoa Hoc Xa Hoi Viet Nam. (The Committee of Social Science of Viet Nam.) Lich Su Viet Nam. (History of Viet Nam.) Tap I. (Vol. 1.) Ha Noi : Nha Xuat Ban Khoa Hoc Xa Hoi, 1971.

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