You will have read lots of papers, just copy their style. I would never go beyond a single level of parenthesis, it just becomes unreadable.
You would usually expect to find the citations at the end of the document with just a marker in the text. The text has to be readable and mentioning names, studies and dates in the body of the text detracts from the readability of the article. If I really disagreed with something you said, I would follow your source, otherwise I take your word for it and continue reading.
Student or Learner