APA引文

Panek, R. (2019). The trouble with gravity: Solving the mystery beneath our feet. Houghton Mifflin Harcourt.

Chicago Style (17th ed.) Citation

Panek, Richard. The Trouble with Gravity: Solving the Mystery Beneath Our Feet. Boston ; New York: Houghton Mifflin Harcourt, 2019.

MLA引文

Panek, Richard. The Trouble with Gravity: Solving the Mystery Beneath Our Feet. Houghton Mifflin Harcourt, 2019.

警告：這些引文格式不一定是100％准確.