Siebeck, W. e., & et al.;Siebeck, W. (1990). Strengthening protection of intellectual property in developing countries: A survey of the literature. World Bank.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSiebeck, W.E. eds, और W.E et al.;Siebeck. Strengthening Protection of Intellectual Property in Developing Countries: A Survey of the Literature. World Bank, 1990.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSiebeck, W.E. eds, और W.E et al.;Siebeck. Strengthening Protection of Intellectual Property in Developing Countries: A Survey of the Literature. World Bank, 1990.
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