Islam, N. (2008). An introduction to research methods: A handbook for business and health research. Mullick & brothers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रIslam, Nurul. An Introduction to Research Methods: A Handbook for Business and Health Research. Dhaka: Mullick & brothers, 2008.
एमएलए (8वां संस्करण) प्रशस्ति पत्रIslam, Nurul. An Introduction to Research Methods: A Handbook for Business and Health Research. Mullick & brothers, 2008.
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