COWAN, E. Writing brief edition#Clifzabeth Cowan. Scott Foresman and Company.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCOWAN, Elizabeth. Writing Brief Edition#Clifzabeth Cowan. Scott Foresman and Company.
एमएलए (8वां संस्करण) प्रशस्ति पत्रCOWAN, Elizabeth. Writing Brief Edition#Clifzabeth Cowan. Scott Foresman and Company.
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