Gaya APA

Prokopenko, J., Kubr, M. (1989). Diagnosing management training and development needs: Concepts and techniques (1). Geneva: International Labur Office.

Gaya MLA

Prokopenko, Joseph., Kubr, Milan. "Diagnosing management training and development needs: Concepts and techniques". 1 Geneva: International Labur Office, 1989. Text.