1) We need to go back to the first 3 AB and do both COMPARE and CONTRAST for each AB. Because you just did one of them last time. So you need to compare the sourse with another source in the AB collection and contrast the source with another source in the collection. You need to do this for every AB.
2) You missed the point of providing interpretive commentary for all ABs that we have done. You should INFORM about the problem or SOLVE the problem after every Quote, Summary or Paraphrase.
3) You can use this sentence ” the unique contribution of the source….” when you mention why this source is special.