APA

Bulmer M., Wolfe K. H. & Sharp P. M. (19910814). Synonymous nucleotide substitution rates in mammalian genes: implications for the molecular clock and the relationship of mammalian orders. : Proceedings of the National Academy of Sciences of the United States of America.

Chicago

Bulmer M, Wolfe K H and Sharp P M. 19910814. Synonymous nucleotide substitution rates in mammalian genes: implications for the molecular clock and the relationship of mammalian orders. : Proceedings of the National Academy of Sciences of the United States of America.

Harvard

Bulmer M., Wolfe K. H. and Sharp P. M. (19910814). Synonymous nucleotide substitution rates in mammalian genes: implications for the molecular clock and the relationship of mammalian orders. : Proceedings of the National Academy of Sciences of the United States of America.

MLA

Bulmer M, Wolfe K H and Sharp P M. Synonymous nucleotide substitution rates in mammalian genes: implications for the molecular clock and the relationship of mammalian orders. : Proceedings of the National Academy of Sciences of the United States of America. 19910814.