I am not sure I understand what you mean by literary heritage? But I know that Ibn Khaldun must be in there somewhere. And how wide is the term "modern sociology"? Will it include weber and durkheim? Or just those living today?
by literay heritage, i mean everything that has been written in the field of sociology. as for modern sociology, i mean what is written and published today, that is, why this large scientific gap?
I will give you some advice that I should have gotten myself as a student. You must narrow down and limit your scope. You are making the mistake I once made. I call it "The Rise and Fall of the Roman Empire-fallacy". As student you cannot compete or even impress those who have spent their lives nosing about in books. So you must limit the scope of your question. You must compare two things, and no more, two phenomena or two writers. Within that limited scope, you can then show your ability to master academic style. But I see that you are a researcher?
Try to use google translate. They way it comes across it just seems like gigantic question, on which 12 volumes will soon be published. There is a novel way that you could approach this, by quantitative analysis on digitized sociological text using computers :) But you must still limit. A lot!!