PUNCH, K. F. O. (2014). Introduction to research methods in education. SAGE.
Chicago-čujuhus (17. p.)PUNCH, Keith F. Oancea. Introduction to Research Methods in Education. SAGE, 2014.
MLA-čujuhus (9. p.)PUNCH, Keith F. Oancea. Introduction to Research Methods in Education. SAGE, 2014.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.