एपीए उद्धरण

Drucker, P. F. (1980). Managing in turbulent times. Allied.

शिकागो स्टाइल उद्धरण

Drucker, Peter F. Managing in Turbulent Times. New Delhi: Allied, 1980.

एमएलए उद्धरण

Drucker, Peter F. Managing in Turbulent Times. Allied, 1980.