Gaya APA

Young, C, W. et al (1956). Introduction to biological science: a study of the human body and of the world of plants and animals . New York: Harper & Row, Publisher.

Gaya MLA

Young, Clarence, W.. et al. "Introduction to biological science: a study of the human body and of the world of plants and animals". New York: Harper & Row, Publisher, 1956. Text.