Wylie, P., & Grothe, M. (1981). Problem employees: How to improve their performance. Pitman Learning.
Chicago Style aipamenaWylie, Peter, and Mardy Grothe. Problem Employees: How to Improve Their Performance. Belmont, Calif: Pitman Learning, 1981.
MLA aipamenaWylie, Peter, and Mardy Grothe. Problem Employees: How to Improve Their Performance. Pitman Learning, 1981.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.