MLA

Bell, Ronald P. Acids and Bases : Their Quantitative Behaviour. 2nd ed. London: Methuen, 1971.

APA

Bell, R. P. (1971). Acids and bases : their quantitative behaviour. 2nd ed. London: Methuen.

Chicago

Bell, Ronald P., Acids and Bases: Their Quantitative Behaviour. 2nd ed. London: Methuen, 1971.