Brown, L. R., Flavin, C., & Kane, H. (1997). Vital signs 1996: The trends that are shaping our future. W. W. Norton.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBrown, Lester Russell, Christopher Flavin, और Hal Kane. Vital Signs 1996: The Trends That Are Shaping Our Future. New York: W. W. Norton, 1997.
एमएलए (9वां संस्करण) प्रशस्ति पत्रBrown, Lester Russell, et al. Vital Signs 1996: The Trends That Are Shaping Our Future. W. W. Norton, 1997.
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