APA (7th ed.) Citation

O'Barr, W. M., & O'Barr, J. F. (1976). Language and politics. Mouton.

Chicago Style (17th ed.) Citation

O'Barr, William M., and Jean F. O'Barr. Language and Politics. The Hague [etc.]: Mouton, 1976.

MLA (9th ed.) Citation

O'Barr, William M., and Jean F. O'Barr. Language and Politics. Mouton, 1976.