APA (7 वां संस्करण) प्रशस्ति पत्र

Gilbert, I. (2014). Independent thinking. Independent Thinking Press.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Gilbert, Ian. Independent Thinking. Carmarthen, Wales: Independent Thinking Press, 2014.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Gilbert, Ian. Independent Thinking. Independent Thinking Press, 2014.