Introduction
The texts of the offertories
The Gregorian and Roman offertories
The Milanese melodic witness and the question of "Italianate" style
Origin and chronology
The offertories in manuscripts : an introduction to the edition.
Inside the offertory : aspects of chronology and transmission by Rebecca Maloy. ISBN 9780195315172. Published by Oxford University Press in 2010. Publication and catalogue information, links to buy online and reader comments.