APA (7th ed.) Citation

Northrop, F. S. C. (1931). Science and first principles. The Macmillan company.

Chicago Style (17th ed.) Citation

Northrop, Filmer Stuart Cuckow. Science and First Principles. New York: The Macmillan company, 1931.

MLA (9th ed.) Citation

Northrop, Filmer Stuart Cuckow. Science and First Principles. The Macmillan company, 1931.