Graziano, A. M. Research Methods: Pearson New International Edition : A Process of Inquiry (8.). Pearson Education UK.
Cita Chicago (17th ed.)Graziano, Anthony M.;Raulin. Research Methods: Pearson New International Edition : A Process of Inquiry. 8. Pearson Education UK.
Cita MLA (8th ed.)Graziano, Anthony M.;Raulin. Research Methods: Pearson New International Edition : A Process of Inquiry. 8. Pearson Education UK.
Atenció: Aquestes cites poden no estar 100% correctes.