एपीए उद्धरण

Callahan, K. R. (2004). Essentials of strategic project management. Jossey-Bass.

शिकागो स्टाइल उद्धरण

Callahan, Kevin R. Essentials of Strategic Project Management. Jossey-Bass, 2004.

एमएलए उद्धरण

Callahan, Kevin R. Essentials of Strategic Project Management. Jossey-Bass, 2004.