Österling, O. (1967). The efficacy of special education: A comparative study of classes for slow learners. Svenska bokförlaget.
Chicago Style (17th ed.) CitationÖsterling, Olle. The Efficacy of Special Education: A Comparative Study of Classes for Slow Learners. Stockholm: Svenska bokförlaget, 1967.
MLA (8th ed.) CitationÖsterling, Olle. The Efficacy of Special Education: A Comparative Study of Classes for Slow Learners. Svenska bokförlaget, 1967.
Warning: These citations may not always be 100% accurate.