Unesco-UNEP International Environmental Education Programme. (1988). Environmental education: A process for pre-service teacher training curriculm development. Unesco.
Παραπομπή σε μορφή Chicago (17η εκδ.)Unesco-UNEP International Environmental Education Programme. Environmental Education: A Process for Pre-service Teacher Training Curriculm Development. Paris: Unesco, 1988.
Παραπομπή σε μορφή MLA (9th εκδ.)Unesco-UNEP International Environmental Education Programme. Environmental Education: A Process for Pre-service Teacher Training Curriculm Development. Unesco, 1988.
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