APA (7 वां संस्करण) प्रशस्ति पत्र
Beck, H., Siemers, M., & Reuter, M. (2011). Powder-actuated fasteners and fastening screws in steel construction. Ernst & Sohn.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Beck, Hermann, Michael Siemers, और Martin Reuter. Powder-actuated Fasteners and Fastening Screws in Steel Construction. Somerset County, N.J.: Ernst & Sohn, 2011.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Beck, Hermann, et al. Powder-actuated Fasteners and Fastening Screws in Steel Construction. Ernst & Sohn, 2011.
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