Modgil, S. (1974). Piagetian research: A handbook of recent studies. NFER [distributed in the U.S.A. by Humanities Press, New York].
Citazione stile Chigago Style (17a edizione)Modgil, Sohan. Piagetian Research: A Handbook of Recent Studies. Windsor: NFER [distributed in the U.S.A. by Humanities Press, New York], 1974.
Citatione MLA (8a ed.)Modgil, Sohan. Piagetian Research: A Handbook of Recent Studies. NFER [distributed in the U.S.A. by Humanities Press, New York], 1974.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.