Gaya APA

Nelson, G, E., A., I, R, G, G, I, B, R, Ã. (1970). Fundamental concepts of Biology . New York: .

Gaya MLA

Nelson, Gideon, E.., A., I., Robinson,, Gerald, G., II., Boolootian,, Richard, ì. "Fundamental concepts of Biology". New York: , 1970. Text.