Cita APA (7a ed.)

Brown, D., & Perfit, M. R. (2017). Older than dirt: A kinda-sorta biography of Earth. Houghton Mifflin Harcourt.

Cita Chicago Style (17a ed.)

Brown, Don, y Michael R. Perfit. Older than Dirt: A Kinda-sorta Biography of Earth. Boston ; New York: Houghton Mifflin Harcourt, 2017.

Cita MLA (8a ed.)

Brown, Don, y Michael R. Perfit. Older than Dirt: A Kinda-sorta Biography of Earth. Houghton Mifflin Harcourt, 2017.

Precaución: Estas citas no son 100% exactas.