Singh, Sanjay Kumar. Encyclopaedic biography of world great educational psychologists/ by Sanjay Kumar Singh. - New Delhi, India: Anmol Publications Pvt. Ltd., 2009. - 3 v. (x, 840 p.); 25 cm. Other Titles: World great educational psychologists Includes bibliographic reference and index. ISBN: 9788126140893 8126140895 Subjects--Topical Terms: Educational psychologists -- Biography -- Dictionaries. Educational psychologists. Dewey Class. No.: 921.03 / SIN/E