The aim of this study is to describe the most important sources of terminology in literary studies and to reveal some linguistic aspects of terminology in the field during the 1920s and 1930s. The objectives are: 1) to identify the main groups of terminographic resources (dictionaries, literary and historical periodicals, periodicals); 2) to describe the most interesting linguistic aspects of terminology (synonymy, hyphenation, deonymisation, separation). Research practice has shown that the fullest possible picture of the development of terminology can be obtained by looking at the resources of different groups of terms: dictionaries, monographs, educational literature, periodicals, etc. In this chapter, describing the third stage of the development of terminology, various lexicographical sources have been chosen as terminological resources in order to concentrate the material, including several large-scale dictionaries of relevance to the period under consideration - terminological and converse dictionaries. A significant group of sources for terminology is the set of publications on literary history and literary theory. Finally, groups of periodicals (annual, monthly, daily) have been identified, the subjects of the publications have been outlined and the most prolific authors have been mentioned.