Hill, N., & Fotinos, J. (2010). The law of success. Penguin Audio, Magn Publishing.
Lua i Stíl Chicago (17ú heag.)Hill, Napoleon, agus Joel Fotinos. The Law of Success. New York : Mumbai: Penguin Audio, Magn Publishing, 2010.
Lua MLA (8ú heag.)Hill, Napoleon, agus Joel Fotinos. The Law of Success. Penguin Audio, Magn Publishing, 2010.
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