Hill, N., & Gardner, G. (2008). The law of success: From the master mind to the golden rule (in sixteen lessons) (Unabridged.). Ascent Audio.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHill, Napoleon, और Grover Gardner. The Law of Success: From the Master Mind to the Golden Rule (in Sixteen Lessons). Unabridged. Rego Park: Ascent Audio, 2008.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHill, Napoleon, और Grover Gardner. The Law of Success: From the Master Mind to the Golden Rule (in Sixteen Lessons). Unabridged. Ascent Audio, 2008.
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