For additional materials on this topic, the Library of Congress Online Catalog is a great resource for research. Browsing by Library of Congress Subject Heading (LCSH), a controlled vocabulary for use in bibliographic records, will provide lists of materials sorted by topic. The sheer number of subject headings on linguistics and its subsections renders it impossible to list them all here.
To browse by subject heading, go to the online catalog, locate the browse feature, click on the "hamburger menu" at the top right corner of your screen (resembles three horizontal bars). Once there, on the drop-down menu select "SUBJECTS beginning with." In the search bar to the immediate right of the drop down menu, you can begin your search for subject headings.
The following linked subject heading browses will provide a great starting point for researching this topic: