Mark, J. (1964). Raising productivity in Singapore ; with case studies. Economic Development Board of Singapore.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMark, Joseph. Raising Productivity in Singapore ; with Case Studies. [Singapore: Economic Development Board of Singapore, 1964.
एमएलए (9वां संस्करण) प्रशस्ति पत्रMark, Joseph. Raising Productivity in Singapore ; with Case Studies. Economic Development Board of Singapore, 1964.
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