APA Edition Citation

Husen, T. (1967). International study of achievement in mathematics: Comparison of Twelve countries. John Wiley.

Chicago Edition Citation

Husen, Torsten. International Study of Achievement in Mathematics: Comparison of Twelve Countries. New York: John Wiley, 1967.

MLA Edition Citation

Husen, Torsten. International Study of Achievement in Mathematics: Comparison of Twelve Countries. John Wiley, 1967.

Warning: These citations may not always be 100% accurate.