APA (7th ed.) Zitazioa
Husen, T. (1959). Differentiation and guidance in the comprehensive school.
Chicago Style (17th ed.) Zitazioa
Husen, Torsten. Differentiation and Guidance in the Comprehensive School. 1959.
MLA (9th ed.) Zitazioa
Husen, Torsten. Differentiation and Guidance in the Comprehensive School. 1959.
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