APA-čujuhus (7. p.)
Ward, P. D., & Ehlert, D. W. (2006). Out of thin air: Dinosaurs, birds, and Earth's ancient atmosphere. Joseph Henry Press.
Chicago-čujuhus (17. p.)
Ward, Peter D., juo David W. Ehlert. Out of Thin Air: Dinosaurs, Birds, and Earth's Ancient Atmosphere. Washington, District of Columbia: Joseph Henry Press, 2006.
MLA-čujuhus (9. p.)
Ward, Peter D., juo David W. Ehlert. Out of Thin Air: Dinosaurs, Birds, and Earth's Ancient Atmosphere. Joseph Henry Press, 2006.
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