Symposium on Issues in Human Development Φιλαδέλφεια, Πενσυλβάνια), & Vaughan, V. C. (1967). Issues in human development: An inventory of problems, unfinished business and directions for research. [National Institutes of Health].
Παραπομπή σε μορφή Chicago (17η εκδ.)Symposium on Issues in Human Development Φιλαδέλφεια, Πενσυλβάνια), και Victor C. Vaughan. Issues in Human Development: An Inventory of Problems, Unfinished Business and Directions for Research. [Rockville, Md.]: [National Institutes of Health], 1967.
Παραπομπή σε μορφή MLA (8th εκδ.)Symposium on Issues in Human Development Φιλαδέλφεια, Πενσυλβάνια), και Victor C. Vaughan. Issues in Human Development: An Inventory of Problems, Unfinished Business and Directions for Research. [National Institutes of Health], 1967.
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