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APA Citation
Ziegler, A., Chandler, K. L., Vialle, W., & Stoeger, H. (n.d.). exogenous and Endogenous Learning Resources in the Actiotope Model of Giftedness and Its Significance for Gifted Education. Journal for the education of the gifted, 40, 310–333. http://access.bl.uk/ark:/81055/vdc_100070098039.0x00000c