Cite
MLA Citation
Guangming Ling et al.. “Do TOEFL iBT® Scores Reflect Improvement in English‐Language Proficiency? Extending the TOEFL iBT Validity Argument.” ETS research report series, vol. 1, 2014, pp. 1–16. http://access.bl.uk/ark:/81055/vdc_100047089855.0x000001