APA (7 वां संस्करण) प्रशस्ति पत्र

Knowles, D. (2007). Automotive suspension & steering systems (4th ed.). Delmar, Cengage learning.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Knowles, Don. Automotive Suspension & Steering Systems. 4th ed. Australia: Delmar, Cengage learning, 2007.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Knowles, Don. Automotive Suspension & Steering Systems. 4th ed. Delmar, Cengage learning, 2007.