Gaya APA

Singer, C. (1962). A History of biology to about the year 1900 : a general introduction to the study of living things . London: Abelard-Schuman.

Gaya MLA

Singer, Charles. "A History of biology to about the year 1900 : a general introduction to the study of living things". London: Abelard-Schuman, 1962. Text.