Kenneth G. Wilson (1923). The Columbia Guide to Standard American English. 1993.
-ise, -ize (suffix)
is an extremely prolific word-forming suffix, and many conservatives balk at what appears to be unnecessary invention and overuse of the device to coin such originally nonce words as concretize, computerize, pauperize, and the like. Americans make more use of -ize; Britons use more of -ise, but there are many American spellings with -ise as well. See SPELLING (1).