APA (7 वां संस्करण) प्रशस्ति पत्र

Willis, J. R. (1976). Fragments of American Life: An Exhibition of Paintings / John Ralph Willis. Art Museum.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Willis, John Ralph. Fragments of American Life: An Exhibition of Paintings / John Ralph Willis. Princeton: Art Museum, 1976.

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Willis, John Ralph. Fragments of American Life: An Exhibition of Paintings / John Ralph Willis. Art Museum, 1976.

चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.