Vanderkam, L., & London, E. (2010). 168 hours: You have more time than you think (Unabridged.). Ascent Audio.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रVanderkam, Laura, और Elizabeth London. 168 Hours: You Have More Time than You Think. Unabridged. Rego Park: Ascent Audio, 2010.
एमएलए (8वां संस्करण) प्रशस्ति पत्रVanderkam, Laura, और Elizabeth London. 168 Hours: You Have More Time than You Think. Unabridged. Ascent Audio, 2010.
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