APA (7th ed.) Citation

Wilson, A. (1970). pH Meters. Kogan Page [u.a.].

Chicago Style (17th ed.) Citation

Wilson, A. PH Meters. London [u.a.]: Kogan Page [u.a.], 1970.

MLA (9th ed.) Citation

Wilson, A. PH Meters. Kogan Page [u.a.], 1970.