Clarke,Alan, & Dawson,Ruth. (1999). Evaluation Research: An introduction to principles, methods and practice. Sage Publications.
استشهاد بنمط شيكاغوClarke,Alan, و Dawson,Ruth. Evaluation Research: An Introduction to Principles, Methods and Practice. London: Sage Publications, 1999.
MLA استشهادClarke,Alan, و Dawson,Ruth. Evaluation Research: An Introduction to Principles, Methods and Practice. Sage Publications, 1999.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.