brochure
A printed informational sheet or booklet about a topic, distributed in a different manner from a published book.
A brochure is a sheet or booklet with information about a particular topic, which is printed but not published and distributed in the manner of a book. Data from brochures, while acceptable for any field, generally has a low to middle level of authority, depending partly on who issues it.
A brochure can be a single sheet or a booklet. Its manner of printing and distribution distinguishes it from a book, so binding or page count alone does not establish the book source type.
The issuer contributes to the brochure's authority as evidence. The format is admissible for any field under the stated rule, but does not give every fact in every brochure the same reliability.