Professor of Psychology, Autonoma University

Indiana University

Professor Emeritus, Education, University of British Columbia

Social Studies Education, Sivas Cumhuriyet University

Professor de História da Educação, UFMG

Associate Professor of Education, University of Oxford

Professor of Education, University of Colorado Boulder

Tarih Eğitimi Profesörü, Trabzon Üniversitesi

University of Michigan

Lecture, Universitas Sebelas Maret