APA (7 वां संस्करण) प्रशस्ति पत्र
Ritt, J. F. (1917). On a general Class of linear homogeneous differential equations of infinite order with constant coefficients..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Ritt, Joseph Fels. On a General Class of Linear Homogeneous Differential Equations of Infinite Order with Constant Coefficients.. Lancaster, 1917.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Ritt, Joseph Fels. On a General Class of Linear Homogeneous Differential Equations of Infinite Order with Constant Coefficients.. 1917.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.