This paper concerns epistemology and the understanding of research processes in Humanities, such as Archaeology. We believe that to properly understand research processes, it is essential to trace them. The collected traces depend on the process model established, which has to be as accurate as possible to exhaustively record the traces. In this paper, we briefly explain why the existing process models for Humanities are not sufficient to represent traces. We then present different process models from Information Systems Engineering that allow tracing processes according to different perspectives such as activities, decisions or strategies. We assume these process models can be useful to represent research processes in Humanities coherently and thoroughly.