American Society for Training and Development & Craig, R. L. (1996). The ASTD training and development handbook: A guide to huma resource development (Forth edition.). McGraw-Hill.

American Society for Training and Development and Robert L. Craig. The ASTD Training and Development Handbook: A Guide to Huma Resource Development. Forth edition. New York: McGraw-Hill, 1996.

American Society for Training and Development and Robert L. Craig. The ASTD Training and Development Handbook: A Guide to Huma Resource Development. Forth edition. McGraw-Hill, 1996.