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.
Chicago-viite (17. p.)Brown, Lester Russell, Nicholas K. Lenssen, Hal Kane, ja Linda Starke. Vital Signs: The Trends That Are Shaping Our Future, 1995. London: W.W. Norton & company, 1995.
MLA-viite (8. p.)Brown, Lester Russell, et al. Vital Signs: The Trends That Are Shaping Our Future, 1995. W.W. Norton & company, 1995.
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