Olsen, W. (2012). Data Collection: Key debates and methods in social research. Sage.
Chicago-čujuhus (17. p.)Olsen, Wendy. Data Collection: Key Debates and Methods in Social Research. Los Angeles: Sage, 2012.
MLA-čujuhus (9. p.)Olsen, Wendy. Data Collection: Key Debates and Methods in Social Research. Sage, 2012.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.