APA (7th ed.) Citation

O'Neill, R. F., & O'Neill, R. F. (1962). Theories of knowledge. Prentice-Hall.

Chicago Style (17th ed.) Citation

O'Neill, Reginald F., and Reginald F. O'Neill. Theories of Knowledge. Englewood Cliffs, N.J: Prentice-Hall, 1962.

MLA (9th ed.) Citation

O'Neill, Reginald F., and Reginald F. O'Neill. Theories of Knowledge. Prentice-Hall, 1962.