APA (7th ed.) Citation

Thumchai, R. (1963). A critical study of the contents of books in arithmetic in the primary grades in Thailand. s.n.].

Chicago Style (17th ed.) Citation

Thumchai, Rawiwan. A Critical Study of the Contents of Books in Arithmetic in the Primary Grades in Thailand. [Quezon City: s.n.], 1963.

MLA (9th ed.) Citation

Thumchai, Rawiwan. A Critical Study of the Contents of Books in Arithmetic in the Primary Grades in Thailand. s.n.], 1963.