SINGLETON, R. A., & STRAITS, B. C. (1999). Approaches to social research.-- ed.3. Oxford University Press.
Chicago-čujuhus (17. p.)SINGLETON, Royce A., juo Bruce C. STRAITS. Approaches to Social Research.-- Ed.3. Oxford: Oxford University Press, 1999.
MLA-čujuhus (9. p.)SINGLETON, Royce A., juo Bruce C. STRAITS. Approaches to Social Research.-- Ed.3. Oxford University Press, 1999.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.