Van der Vynckt, S., & Barclay, E. (1984). The Unesco resource pack for nutrition teaching-learning: An introduction to volume 1. Division of Science, Technical and Vocational Education, United Nations Educational, Scientific, and Cultural Organisation.
Παραπομπή σε μορφή Chicago (17η εκδ.)Van der Vynckt, Susan, και Ellen Barclay. The Unesco Resource Pack for Nutrition Teaching-learning: An Introduction to Volume 1. Paris: Division of Science, Technical and Vocational Education, United Nations Educational, Scientific, and Cultural Organisation, 1984.
Παραπομπή σε μορφή MLA (9th εκδ.)Van der Vynckt, Susan, και Ellen Barclay. The Unesco Resource Pack for Nutrition Teaching-learning: An Introduction to Volume 1. Division of Science, Technical and Vocational Education, United Nations Educational, Scientific, and Cultural Organisation, 1984.