APA (7th ed.) Citation

Morgan, D. L., Krueger, R. A., & King, J. A. The focus group kit.

Chicago Style (17th ed.) Citation

Morgan, David L., Richard A. Krueger, and Jean A. King. The Focus Group Kit.

MLA (8th ed.) Citation

Morgan, David L., et al. The Focus Group Kit.

Warning: These citations may not always be 100% accurate.