Não informado. (2010). Research Studies of the State College of Washington. State College of Washington.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Research Studies of the State College of Washington. Pullman, Wash: State College of Washington, 2010.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Research Studies of the State College of Washington. State College of Washington, 2010.
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