APA Edition Citation

Husen, T. (1967). International study of achievements in mathematics. 2V.

Chicago Edition Citation

Husen, Torsten. International Study of Achievements in Mathematics. 2V. 1967.

MLA Edition Citation

Husen, Torsten. International Study of Achievements in Mathematics. 2V. 1967.

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