@book{ title = {Metodologia della ricerca in psicologia}, author = {Shaughnessy, John J.}, editor = {Amoretti, Guido}, editor = {Chiorri, Carlo}, editor = {Zechmeister, Eugene B.}, editor = {Zechmeister, Jeanne S.}, year = {2012}, edition = {2. ed}, address = {Milano [etc.] }, publisher = {McGraw-Hill}, }