Purves, William K. (2001). Life: The Science of Biology (6th ed.). Sunderland, MA: Sinauer Associates.
ISBN
0-7167-3873-2. {{
cite book}}
: Unknown parameter |coauthors=
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Purves, William K. (2001). Life: The Science of Biology (6th ed.). Sunderland, MA: Sinauer Associates.
ISBN
0-7167-3873-2. {{
cite book}}
: Unknown parameter |coauthors=
ignored (|author=
suggested) (
help)