APA (7th ed.) Citation

TOUGH, A. (1979). The adult's learning projects: A fresh approach to theory and practice in adult learning (2nd ed.). Learning Concepts.

Chicago Style (17th ed.) Citation

TOUGH, Allen. The Adult's Learning Projects: A Fresh Approach to Theory and Practice in Adult Learning. 2nd ed. Texas: Learning Concepts, 1979.

MLA (8th ed.) Citation

TOUGH, Allen. The Adult's Learning Projects: A Fresh Approach to Theory and Practice in Adult Learning. 2nd ed. Learning Concepts, 1979.