Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.