Unknown creator; St. Louis University; Parks College of Saint Louis University. (1941). Parks College industrial machine shop.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रUnknown creator; St. Louis University; Parks College of Saint Louis University. Parks College Industrial Machine Shop. 1941.
एमएलए (8वां संस्करण) प्रशस्ति पत्रUnknown creator; St. Louis University; Parks College of Saint Louis University. Parks College Industrial Machine Shop. 1941.
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