APA (7th ed.) Citation

Freedman, P. (1960). The principles of scientific research. Pergamon Press.

Chicago Style (17th ed.) Citation

Freedman, Paul. The Principles of Scientific Research. Oxford: Pergamon Press, 1960.

MLA (9th ed.) Citation

Freedman, Paul. The Principles of Scientific Research. Pergamon Press, 1960.

Warning: These citations may not always be 100% accurate.