Solomon, E. P. (1999). Biology (5th.). Saunders College Publishing.
Lua i Stíl Chicago (17ú heag.)Solomon, Eldra Pearl. Biology. 5th. New York: Saunders College Publishing, 1999.
Lua MLA (9ú heag.)Solomon, Eldra Pearl. Biology. 5th. Saunders College Publishing, 1999.
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