APA引文

Gardner, M., & Schroeder, T. (1997). Puzzling questions about the solar system. Dover Publications.

Chicago Edition Citation

Gardner, Martin, and Ted Schroeder. Puzzling Questions About the Solar System. Mineola, N.Y.: Dover Publications, 1997.

MLA引文

Gardner, Martin, and Ted Schroeder. Puzzling Questions About the Solar System. Dover Publications, 1997.

警告：這些引文格式不一定是100％准確.