Shopware. (2002). Basic pipefitting skills. Shopware.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रShopware. Basic Pipefitting Skills. Monmouth Junction, NJ: Shopware, 2002.
एमएलए (8वां संस्करण) प्रशस्ति पत्रShopware. Basic Pipefitting Skills. Shopware, 2002.
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