Focus groups in social research
by Michael Bloor ... [et al.]
Sage, 2002
 Buku Teks
Fern, Edward F.
Advanced focus group research
Sage, 2001
 Buku Teks SO
Chalofsky, Neal
How to conduct a focus groups: business skills
American Society for Training & Development Press, 2001
 eBooks
Davis, Christine S.
Focus groups: applying communication theory through design, facilitation, and analysis
Routledge, Taylor & Francis Group, 2017
 Buku Teks
Coburn, Edward J.
Advanced basic: Structured programming for microcomputers
Delmar Publisher, 1986
 Buku Teks