Project structure for an Express REST API when there is no "standard way" – Corey Cleary
Mastering Node.js 12.x: Creating a Controller with Express.Router | packtpub.com - YouTube
NodeJS + Express part 5: Routes and Controllers - DEV Community
Build a REST API with Node.js: Routes and Controllers
Routing and Analyzing Request Data with Node.js - Manning
GitHub - typestack/routing-controllers: Create structured, declarative and beautifully organized class-based controllers with heavy decorators usage in Express / Koa using TypeScript and Routing Controllers Framework.