the same book; the said book; ibid.
Used in formal writing, academic papers, and bibliographic references to refer to a previously mentioned book. Often corresponds to 'ibid.' in citations.
Please refer to Chapter 3 of the same book.
This theory is discussed in detail in the said book.
Compound of 同 (どう, 'same') and 書 (しょ, 'book/writing'). A straightforward Sino-Japanese formation.