LAFFERTY, P. (2005). KNOWLEDGE MASTER HOW THINGS ARE MADE. YOUNG LEARNER PUBLICATIONS.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLAFFERTY, PETER. KNOWLEDGE MASTER HOW THINGS ARE MADE. NEW DELHI: YOUNG LEARNER PUBLICATIONS, 2005.
एमएलए (9वां संस्करण) प्रशस्ति पत्रLAFFERTY, PETER. KNOWLEDGE MASTER HOW THINGS ARE MADE. YOUNG LEARNER PUBLICATIONS, 2005.
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