APA (7th ed.) Citation

Husen, T. (1967). International study of achievement in mathematics. Almqvist & Wiksell Wiley.

Chicago Style (17th ed.) Citation

Husen, Torsten. International Study of Achievement in Mathematics. Stockholm, New York: Almqvist & Wiksell Wiley, 1967.

MLA (9th ed.) Citation

Husen, Torsten. International Study of Achievement in Mathematics. Almqvist & Wiksell Wiley, 1967.