Describe the internal and external criticism that is used to evaluate middle range theories

Making judgement as to whether a theory could be adapted for use in research is very important.  Describe the internal and external criticism that is used to evaluate middle range theories.
This is a discussion post
Needs to be APA 7th edition
400 words with 2 references
less than 10% plagiarism
PLEASE GIVE 2 DISCUSSION REPLIES WITH CITATIONS