APA引文

Loeb, A. (2021). Extraterrestrial: The first sign of intelligent life beyond Earth. Houghton Mifflin Harcourt.

Chicago Style (17th ed.) Citation

Loeb, Abraham. Extraterrestrial: The First Sign of Intelligent Life Beyond Earth. Boston: Houghton Mifflin Harcourt, 2021.

MLA引文

Loeb, Abraham. Extraterrestrial: The First Sign of Intelligent Life Beyond Earth. Houghton Mifflin Harcourt, 2021.

警告：這些引文格式不一定是100％准確.