Cita APA (7th ed.)
Ward, P. D., & Ehlert, D. W. (2006). Out of thin air: Dinosaurs, birds, and Earth's ancient atmosphere. Joseph Henry Press.
Cita Chicago (17th ed.)
Ward, Peter D., i David W. Ehlert. Out of Thin Air: Dinosaurs, Birds, and Earth's Ancient Atmosphere. Washington, District of Columbia: Joseph Henry Press, 2006.
Cita MLA (9th ed.)
Ward, Peter D., i David W. Ehlert. Out of Thin Air: Dinosaurs, Birds, and Earth's Ancient Atmosphere. Joseph Henry Press, 2006.
Atenció: Aquestes cites poden no estar 100% correctes.