APA-Zitierstil (7. Ausg.)

MacKenzie, M., & Kernig, W. (1975). The challenge of informal education: Extending young children's learning in the open classroom. Darton, Longman and Todd.

Chicago-Zitierstil (17. Ausg.)

MacKenzie, Moira, und Wendla Kernig. The Challenge of Informal Education: Extending Young Children's Learning in the Open Classroom. London: Darton, Longman and Todd, 1975.

MLA-Zitierstil (9. Ausg.)

MacKenzie, Moira, und Wendla Kernig. The Challenge of Informal Education: Extending Young Children's Learning in the Open Classroom. Darton, Longman and Todd, 1975.