Merkoša sitáhtat

APA-čujuhus (7. p.)
Vogt, W. P. (2010). Data collection: Data collection experiments and observational research. Sage.
Chicago-čujuhus (17. p.)
Vogt, W. Paul. Data Collection: Data Collection Experiments and Observational Research. Los Angeles: Sage, 2010.
MLA-čujuhus (9. p.)
Vogt, W. Paul. Data Collection: Data Collection Experiments and Observational Research. Sage, 2010.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.