APA
(1956). Main currents of scientific thought. London: Routledge & Kegan Paul.
Chicago
1956. Main currents of scientific thought. London: Routledge & Kegan Paul.
Harvard
(1956). Main currents of scientific thought. London: Routledge & Kegan Paul.
MLA
Main currents of scientific thought. London: Routledge & Kegan Paul. 1956.