Gaya APA
Kelly, M, G., McGrath, J, C. (1975).
Biology Evolution and Adaptation to the Environment .
Boston:
Houghton Mifflin Company.
Gaya MLA
Kelly, Mahlon, G., McGrath, John, C.
"Biology Evolution and Adaptation to the Environment".
Boston:
Houghton Mifflin Company,
1975.
Text.