Abstract: The invention relates to a method of producing a folded, closed booklet which is glued at the central fold thereof. The invention is characterised in that several identical sheets of paper having the same format are stacked on top of one another and are interconnected using a seam of glue which is applied transversely along the centre thereof, and all of said sheets are subsequently folded. The aforementioned glue seam forms a central hinge (1) around which the symmetric pages (2) are articulated. Each of the pages comprises a fold line (3) along the centre thereof, thereby defining an end panel (4a) and a central panel (4b). The inner faces of all of the stacked end panels (4a) are then folded simultaneously against the inner faces of all of the stacked central panels (4b), by means of folding in quires, such that the inner faces of the end panels (4a) are pressed against the inner faces of the central panels (4b) which are articulated around the above-mentioned central hinge (1).