Παραπομπή APA

Cartmell , E., & Fowles , G. .. W. .. A. (1977). Valency and molecular structure (4ed.). Butterworth and Co publishers Ltd.

Παραπομπή Chicago Style

Cartmell , E., και G . W . A. Fowles. Valency and Molecular Structure. 4ed. London: Butterworth and Co publishers Ltd, 1977.

Παραπομπή MLA

Cartmell , E., και G . W . A. Fowles. Valency and Molecular Structure. 4ed. Butterworth and Co publishers Ltd, 1977.