Cite
MLA Citation
Greg Guest et al.. “How Many Focus Groups Are Enough? Building an Evidence Base for Nonprobability Sample Sizes.” Field methods, vol. 29, no. 1, n.d., pp. 3–22. http://access.bl.uk/ark:/81055/vdc_100068282308.0x000003
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Greg Guest et al.. “How Many Focus Groups Are Enough? Building an Evidence Base for Nonprobability Sample Sizes.” Field methods, vol. 29, no. 1, n.d., pp. 3–22. http://access.bl.uk/ark:/81055/vdc_100068282308.0x000003