Historiography is defined as "the writing of history, especially the writing of history based on the critical examination of sources, the selection of particular details from the authentic materials in those sources, and the synthesis of those details into a narrative that stands the test of critical examination. The term historiography also refers to the theory and history of historical writing." - Richard Vann, https://www.britannica.com/topic/historiography
Historiography and literature reviews are important parts of graduate-level historical research.
History students should review scholarly books and articles when compiling sources for historiographical papers or for literature reviews in research papers.