APA (7th ed.) Citation

Popper, K. R., & Bartley, W. W. (1985). Realism and the aim of science (Pbk. ed.). Hutchinson.

Chicago Style (17th ed.) Citation

Popper, Karl Raimund, and William Warren Bartley. Realism and the Aim of Science. Pbk. ed. London [etc.]: Hutchinson, 1985.

MLA (9th ed.) Citation

Popper, Karl Raimund, and William Warren Bartley. Realism and the Aim of Science. Pbk. ed. Hutchinson, 1985.