(1978). Sources of resource materials: A guide of sources for learning and teaching materials for use with young people and adults. National Youth Bureau.
Chicago-Zitierstil (17. Ausg.)Sources of Resource Materials: A Guide of Sources for Learning and Teaching Materials for Use with Young People and Adults. Leicester: National Youth Bureau, 1978.
MLA-Zitierstil (9. Ausg.)Sources of Resource Materials: A Guide of Sources for Learning and Teaching Materials for Use with Young People and Adults. National Youth Bureau, 1978.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.