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the Oxford Advanced Learner’s Dictionary.
https://www.oxfordlearnersdictionaries.com/definition/english/r
etention?q=Retention

Oxford Learner’s Dictionary. (n.d.-k). Definition of textbook noun from
the Oxford Advanced Learner’s Dictionary.
https://www.oxfordlearnersdictionaries.com/definition/english/t
extbook_1?q=Textbook

TED. (n.d.). What is a TEDx Talk? Retrieved October 15, 2023, from
https://www.ted.com/participate/organize-a-local-tedx-
event/tedx-organizer-guide/speakers-program/what-is-a-tedx-
talk

TED. (2019). About › Programs & Initiatives › TED Talks.
https://www.ted.com/about/programs-initiatives/ted-talks

TEDx. (n.d.). What is TEDx? Retrieved October 15, 2023, from
https://www.tedxklb.org/what-is-ted

The Britannica Dictionary. (n.d.). Boot Camp.
https://www.britannica.com/dictionary/boot-camp

APPENDIX

OPAL in the videos
The Oxford Phrasal Academic Lexicon, or OPAL for short, is an
essential guide to the most important words to know in the field of English
for Academic Purposes (EAP). OPAL provides a list of essential vocabulary
you need to know to understand lectures and contribute to academic
discussion.

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