Gribbin, J. Why we are probably the only intelligent life in the galaxy: Alone in the milky way. [article].
Chicago Style (17th ed.) CitationGribbin, John. Why We Are Probably the Only Intelligent Life in the Galaxy: Alone in the Milky Way. [article].
MLA (9th ed.) CitationGribbin, John. Why We Are Probably the Only Intelligent Life in the Galaxy: Alone in the Milky Way. [article].
Warning: These citations may not always be 100% accurate.