Ferriss, T., & Porter, R. (2009). The 4-hour workweek: Escape 9-5, live anywhere, and join the new rich (Unabridged, Updated.). Blackstone Audio, Inc., and Buck 50 Productions, LLC.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFerriss, Timothy, और Ray Porter. The 4-hour Workweek: Escape 9-5, Live Anywhere, and Join the New Rich. Unabridged, Updated. Ashland: Blackstone Audio, Inc., and Buck 50 Productions, LLC, 2009.
एमएलए (8वां संस्करण) प्रशस्ति पत्रFerriss, Timothy, और Ray Porter. The 4-hour Workweek: Escape 9-5, Live Anywhere, and Join the New Rich. Unabridged, Updated. Blackstone Audio, Inc., and Buck 50 Productions, LLC, 2009.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.