Bell, C. R., & Margolis, F. H. (1989). Understanding training: Perspectives and practices. University Associates ; Lakewood Publications.

Bell, Chip R., and Fredric H. Margolis. Understanding Training: Perspectives and Practices. San Diego, Calif. : Minneapolis, Minn.: University Associates ; Lakewood Publications, 1989.

Bell, Chip R., and Fredric H. Margolis. Understanding Training: Perspectives and Practices. University Associates ; Lakewood Publications, 1989.