Glasziou, P., & Heneghan, C. (2009). A spotter's guide to study designs.
Chicago-čujuhus (17. p.)Glasziou, P., juo C. Heneghan. A Spotter's Guide to Study Designs. 2009.
MLA-čujuhus (9. p.)Glasziou, P., juo C. Heneghan. A Spotter's Guide to Study Designs. 2009.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.