Palmer, A. (2018). Happiness hacks: 100% scientific! curiously effective! Srishti Publishers & Distributors.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPalmer, Alex. Happiness Hacks: 100% Scientific! Curiously Effective! New Delhi: Srishti Publishers & Distributors, 2018.
एमएलए (9वां संस्करण) प्रशस्ति पत्रPalmer, Alex. Happiness Hacks: 100% Scientific! Curiously Effective! Srishti Publishers & Distributors, 2018.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.