Generally, any time I say some fact or research stuff, I’m referencing one of these sources
Stephen Krashen’s Website - Language Acquisition
Zoltán Dörnyei‘s Website - Applied Linguistics and Motivation
Self-Efficacy in Second/Foreign Language Learning Contexts
The Language of Thought Hypothesis
Access to Books and Time to Read versus the Common Core State Standards and Tests
Second Language Acquisition and Second Language learning
*Not a complete list