There is no set textbook for the course, though the book A Cognitive Neuropsychological Approach to Assessment and Intervention in Aphasia: A Clinician's Guide by Whitworth, Webster, & Howard is a good reference. (Available online via the library.) Readings will be recommended for each week- either strongly recommended (key to topics) or optional (tangents, related topics, more information). A list of the readings can be found on iLearn each week.
The main reference will be the iLearn web page, which can be accessed at http://learn.mq.edu.au. It will be updated throughout the semester with lecture notes, readings, etc, so check it regularly. This is also where you will find the unit schedule and readings for each week.