Krueger,, Richard A. Focus groups : a practical guide for applied research / Richard A. Krueger, Mary Anne Casey

Focus groups : a practical guide for applied research / Richard A. Krueger, Mary Anne Casey . - 5th ed . - Los Angeles : Sage, cop. 2015 . - XX, 252 p. : il. 25 cm
978-1-4833-6524-4 Brochado

303.62