aforementioned work; op. cit.; cited work
Formal academic expression used in footnotes, endnotes, and bibliographic references to refer to a previously cited work.
For details, please refer to the aforementioned work.
Op. cit., p. 32.
Compound of 前 (before, previous) + 掲 (put up, display) + 書 (book, document). The combination 前掲 means 'aforementioned' or 'cited above', and adding 書 specifies a written work.