APA (7th ed.) Zitazioa
Brown, L. R., Renner, M., & Halweil, B. Vital Signs 2000: The Environmental Trends That Are Shaping Our Future. Norton.
Chicago Style (17th ed.) Zitazioa
Brown, Lester R., Michael Renner, eta Brian Halweil. Vital Signs 2000: The Environmental Trends That Are Shaping Our Future. Nueva York, EUA: Norton.
MLA (9th ed.) Zitazioa
Brown, Lester R., et al. Vital Signs 2000: The Environmental Trends That Are Shaping Our Future. Norton.
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