Gaya APA

Raven, P, H., E, I, E, R, F, I, E, S. (1986). Biology of plants . New York: New York: Worth; 1986.

Gaya MLA

Raven, Peter, H., E, I., Evert,, Ray, F, II., Eichhorn,, Susan. "Biology of plants". New York: New York: Worth; 1986, 1986. Text.