PUNCH, K. F. O. (2014). Introduction to research methods in education. SAGE.
Cita Chicago (17th ed.)PUNCH, Keith F. Oancea. Introduction to Research Methods in Education. SAGE, 2014.
Cita MLA (9th ed.)PUNCH, Keith F. Oancea. Introduction to Research Methods in Education. SAGE, 2014.
Atenció: Aquestes cites poden no estar 100% correctes.