Cita APA

Murrell, J. M., & Kettle, S. F. A. J. (1974). Valence theory (2nd ed.). ELBS and Wiley.

Chicago Edition Citation

Murrell, J M., i S F A Jedder Kettle. Valence Theory. 2nd ed. London: ELBS and Wiley, 1974.

Cita MLA

Murrell, J M., i S F A Jedder Kettle. Valence Theory. 2nd ed. ELBS and Wiley, 1974.