Book of Mormon writers by verse

According to the Book of Mormon itself, it was written by many ancient prophets. The authors of this study made the assumption > that the writers of each verse, or partial verse, could be identified according to information given in the text. The authors of the study found their assumption accurate. > Through the process of assigning each quoted segment a source, we identified over one hundred authors or originators. Unfortunately the study was conducted in the infancy of the internet and I haven't been able to locate the database of verse-author assignments. What available resource provides the author of each verse according to internal authorship statements?