APA (7e ed.) Bronvermelding

Phillips, G. M., Pedersen, D. J., & Wood, J. T. (1979). Group discussion, a practical guide to participation and leadership. Houghton Mifflin.

Chicago (17e ed.) Bronvermelding

Phillips, Gerald M., Douglas J. Pedersen, en Julia T. Wood. Group Discussion, a Practical Guide to Participation and Leadership. Boston: Houghton Mifflin, 1979.

MLA (9e ed.) Bronvermelding

Phillips, Gerald M., et al. Group Discussion, a Practical Guide to Participation and Leadership. Houghton Mifflin, 1979.