APA引文

Skurzynski, G. (2004). Are we alone?: Scientists search for life in space. National Geographic Society.

Chicago Style (17th ed.) Citation

Skurzynski, Gloria. Are We Alone?: Scientists Search for Life in Space. Washington, DC: National Geographic Society, 2004.

MLA引文

Skurzynski, Gloria. Are We Alone?: Scientists Search for Life in Space. National Geographic Society, 2004.

警告：這些引文格式不一定是100％准確.