Cita APA (7a ed.)

Stoeger, W. R., Spitz, A. H., & Impey, C. (2013). Encountering Life in the Universe: Ethical Foundations and Social Implications of Astrobiology. The University of Arizona Press.

Cita Chicago Style (17a ed.)

Stoeger, William R., Anna H. Spitz, y Chris Impey. Encountering Life in the Universe: Ethical Foundations and Social Implications of Astrobiology. Tucson: The University of Arizona Press, 2013.

Cita MLA (8a ed.)

Stoeger, William R., et al. Encountering Life in the Universe: Ethical Foundations and Social Implications of Astrobiology. The University of Arizona Press, 2013.