Books may be classed under four heads, namely (1) Autonymous — (2) Polyonymous — (3) Pseudonymous, and — (4) Anonymous. ¶ 1. Autonymous, the first and most common is with the author's name either on the title-page, or if not on the title-page, signed to a preface, introduction, letter, or dedication, or in some part of the book, or at the end. Speeches though usually anonymous with regard to the reporting or editing, are frequently catalogued under the name of the speaker as autonymous. ¶ 2. Polyonymous, is with several authors' names. […] ¶ 3. Pseudonymous, without the author's name, but with a fictitious name or designation, […] ¶ 4. Lastly an Anonymous book is one without the author's name […]
Source: wiktionary