Loeb, A. (2021). Extraterrestrial: The first sign of intelligent life beyond Earth. Houghton Mifflin Harcourt.
Cita Chicago Style (17a ed.)Loeb, Abraham. Extraterrestrial: The First Sign of Intelligent Life Beyond Earth. Boston: Houghton Mifflin Harcourt, 2021.
Cita MLA (8a ed.)Loeb, Abraham. Extraterrestrial: The First Sign of Intelligent Life Beyond Earth. Houghton Mifflin Harcourt, 2021.
Precaución: Estas citas no son 100% exactas.