APA (7th ed.) Citation

Ennis, R. H. (1969). Logic in teaching. Prentice-Hall.

Chicago Style (17th ed.) Citation

Ennis, Robert Hugh. Logic in Teaching. Englewood Cliffs, N.J: Prentice-Hall, 1969.

MLA (9th ed.) Citation

Ennis, Robert Hugh. Logic in Teaching. Prentice-Hall, 1969.