Documentation - Leaflet - a JavaScript library for interactive maps
Adding labels to Ember Leaflet markers
GIS Tutorial with Leafletjs (Popup and Marker Modifications) – Detri Amelia Chandra
labeling - How to show label over markers on leaflet? - Geographic Information Systems Stack Exchange
GitHub - sigma-geosistemas/Leaflet.awesome-markers: Colorful, iconic & retina-proof markers for Leaflet, based on the Font Awesome/Twitter Bootstrap icons.