APA (7 वां संस्करण) प्रशस्ति पत्र

Walls, C. (2019). Spring in action (Fifth edition.). Manning.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Walls, Craig. Spring in Action. Fifth edition. Shelter Island: Manning, 2019.

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Walls, Craig. Spring in Action. Fifth edition. Manning, 2019.