APA (7 वां संस्करण) प्रशस्ति पत्र

Purday, H. F. P. (1954). Linear equations in applied mechanics. Oliver and Boyd; Interscience Publishers.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Purday, Herbert Frank Percy. Linear Equations in Applied Mechanics. Edinburgh, New York: Oliver and Boyd; Interscience Publishers, 1954.

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Purday, Herbert Frank Percy. Linear Equations in Applied Mechanics. Oliver and Boyd; Interscience Publishers, 1954.