APA aipamena

Drucker, P. F. (1980). Managing in turbulent times. London: Heinemann.

Chicago Style aipamena

Drucker, Peter F. Managing in Turbulent Times. London: Heinemann, 1980.

MLA aipamena

Drucker, Peter F. Managing in Turbulent Times. London: Heinemann, 1980.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.