Brownlee, P. D. W. a. D. Rare earth why complex life is uncommon in the universe. Copernicus.
Chicago Style (17th ed.) CitationBrownlee, Peter D. Ward and Donald. Rare Earth Why Complex Life Is Uncommon in the Universe. Copernicus.
MLA (8th ed.) CitationBrownlee, Peter D. Ward and Donald. Rare Earth Why Complex Life Is Uncommon in the Universe. Copernicus.
Warning: These citations may not always be 100% accurate.