Sex and the Origins of Death
by William R. Clark, 1998, Oxford University Press
What is Sex?
by Lynn Margulis and Dorion Sagan
Dazzle Gradually: Reflections on the Nature of Nature
by Lynn Margulis and Dorion Sagan, 2007, Chelsea Green Publishing
Life on a Young Planet: The First Three Billion Years of Evolution on Earth
by Andrew H. Knoll, 2003, Princeton University Press