1. Anthony L.(2018).AntConc (Version 3.5.7) [Computer Software].Tokyo Japan:Waseda University. Retrieved September 29 2020 fromhttp://www.laurenceanthony.net/software.
2. American Council on the Teaching of Foreign Languages (ACTFL). (2012).ACTFL proficiency guidelines[Electronic version]. Retrieved 11 January 2019 fromhttps://www.actfl.org/sites/default/files/guidelines/ACTFLProficiencyGuidelines2012.pdf
3. Socio‐Cognitive Functions of L1 Collaborative Interaction in the L2 Classroom
4. Avant Assessment. Avant STAMP. (2020).Language proficiency test in reading writing listening and speaking. Retrieved September 29 2020 fromhttps://avantassessment.com/stamp
5. Using a Corpus in a 300-Level Spanish Grammar Course