International William T. Preyer Symposium, Eckardt, G., & Preyer, W. T. (1985). Contributions to a history of developmental psychology: International William T. Preyer Symposium. New Babylon.
Chicago Style (17th ed.) CitationInternational William T. Preyer Symposium, Georg Eckardt, and William T. Preyer. "Contributions to a History of Developmental Psychology: International William T. Preyer Symposium." New Babylon 1985.
MLA (9th ed.) CitationInternational William T. Preyer Symposium, et al. "Contributions to a History of Developmental Psychology: International William T. Preyer Symposium." New Babylon, 1985.
Warning: These citations may not always be 100% accurate.