Brown, L. R., Lenssen, N. K., Kane, H., & Starke, L. (1995). Vital signs: The trends that are shaping our future, 1995. W.W. Norton & company.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBrown, Lester Russell, Nicholas K. Lenssen, Hal Kane, और Linda Starke. Vital Signs: The Trends That Are Shaping Our Future, 1995. London: W.W. Norton & company, 1995.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBrown, Lester Russell, et al. Vital Signs: The Trends That Are Shaping Our Future, 1995. W.W. Norton & company, 1995.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.