Bezirhan, U., Foy, P., & von Davier, M. (2023). PIRLS 2021 achievement scaling methodology: Item Response Theory, population models, and linking across modes. In M. von Davier, I. V. S. Mullis, B. Fishbein, & P. Foy (Eds.), Methods and Procedures: PIRLS 2021 Technical Report (pp. 10.1-10.19). Boston College, TIMSS & PIRLS
International Study Center. https://doi.org/10.6017/lse.tpisc.tr2103.kb3131
ISBN: 978-1-889938-68-4
Library of Congress Catalog Card Number: 2023902579
