Cita APA (7th ed.)
Abramovitz, J. N., & Starke, L. Vital Signs 2001: The Trends that Are Shaping Our Future. Norton.
Cita Chicago (17th ed.)
Abramovitz, Janet N., i Linda Starke. Vital Signs 2001: The Trends That Are Shaping Our Future. Nueva York, EUA: Norton.
Cita MLA (9th ed.)
Abramovitz, Janet N., i Linda Starke. Vital Signs 2001: The Trends That Are Shaping Our Future. Norton.
Atenció: Aquestes cites poden no estar 100% correctes.