Kramer, D., & Pratt, S. (2016). The $500 cup of coffee: A lifestyle approach to financial independence (Unabridged.). Your Coach Digital.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKramer, David, और Sean Pratt. The $500 Cup of Coffee: A Lifestyle Approach to Financial Independence. Unabridged. Rego Park: Your Coach Digital, 2016.
एमएलए (8वां संस्करण) प्रशस्ति पत्रKramer, David, और Sean Pratt. The $500 Cup of Coffee: A Lifestyle Approach to Financial Independence. Unabridged. Your Coach Digital, 2016.
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