Tohutoro APA (7th ed.)
Flavin, C., Töpfer, K., & Abramovitz, J. N. Vital Signs 2002: The Trends that Are Shaping Our Future. Norton.
Tohutoru Kātū Chicago (17th ed.)
Flavin, Christopher, Klaus Töpfer, me Janet N. Abramovitz. Vital Signs 2002: The Trends That Are Shaping Our Future. Nueva York, EUA: Norton.
Tohutoro MLA (9th ed.)
Flavin, Christopher, et al. Vital Signs 2002: The Trends That Are Shaping Our Future. Norton.
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