(1984). Process evaluation and research planning. New York: Chem Systems, Inc.
शिकागो स्टाइल उद्धरणProcess Evaluation and Research Planning. New York: Chem Systems, Inc, 1984.
एमएलए उद्धरणProcess Evaluation and Research Planning. New York: Chem Systems, Inc, 1984.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.