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Tags are assigned to citations in order to indicate to your students and the library the requirement of the readings.
What do the tags mean?
Textbook
Assign this to any print or eBook that is the designated textbook for your course. This indicates to the Library how many copies we need to purchase, and lets your students know its importance.
Required
Assign this to any print or electronic text that must be read by students (e.g. pre-reading for a tutorial).