Professional writing is a multidisciplinary subject with no dedicated subject database. Therefore, you should explore databases in related subject areas such as business, language, psychology, education, and others. You can access our extensive collection of databases through the database portal where you can browse and explore them by subject area. This will involve some trial and error until you discover which databases and keywords work for you. Here's a selective list of some databases that will have content relevant to professional writing.
This multi-disciplinary database provides active full text for more than 3,100 journals, including active full text for nearly 2,750 peer-reviewed journals.