Stacey, N., Jones, J., & Olding, P. (2014). How we got to now (Widescreen.). PBS.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रStacey, Nic, Julian Jones, और Paul Olding. How We Got to Now. Widescreen. [Arlington, Virginia]: PBS, 2014.
एमएलए (8वां संस्करण) प्रशस्ति पत्रStacey, Nic, et al. How We Got to Now. Widescreen. PBS, 2014.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.