This kind of technology has enhanced the audio book market and authors can «self - publish» their own audio book format through ACX. (killzoneblog.com)
«We live in a world where variety is everything and book buyers want to have the luxury of choice — to have access to titles in paperback, hardback, e-book or audio book format — according to their lifestyle and preference.» (goodereader.com)
in any language, in print form, digital format, audio book format, or via any other medium, now known or hereafter devised, (helensedwick.com)