*Valid September 30, 2024 - December 25, 2024 at Canadian stores and at indigo.ca, while quantities last, with $50.00 or more pre-tax purchase of eligible product(s), after discounts and plum points redemptions. Minimum purchase amount excludes gift cards, plum+ memberships, Love of Reading products/donations, and shipping costs. Selection may vary between stores and online.
The Theory and Practice of Item Response Theory/en-ca/the-theory-and-practice-of-item-response-theory/81433174-71A0-4FE4-8AA5-6B87EAD59708.html81433174-71A0-4FE4-8AA5-6B87EAD59708