Skurzynski, G. (2004). Are we alone?: Scientists search for life in space. National Geographic Society.
Style de citation Chicago (17e éd.)Skurzynski, Gloria. Are We Alone?: Scientists Search for Life in Space. Washington, DC: National Geographic Society, 2004.
Style de citation MLA (8e éd.)Skurzynski, Gloria. Are We Alone?: Scientists Search for Life in Space. National Geographic Society, 2004.
Attention : ces citations peuvent ne pas être correctes à 100%.