APA (7th ed.) Citation

McColvin, L. R. (1948). How to find out ([2nd ed.].). Pub. for the National Book League by Cambridge University Press.

Chicago Style (17th ed.) Citation

McColvin, Lionel Roy. How to Find Out. [2nd ed.]. London: Pub. for the National Book League by Cambridge University Press, 1948.

MLA (9th ed.) Citation

McColvin, Lionel Roy. How to Find Out. [2nd ed.]. Pub. for the National Book League by Cambridge University Press, 1948.