In my toolbox: A review of five brush calligraphy pens | Pieces Calligraphy
Amazon.com: Brush Pen Calligraphy: Mastering the Art of Brush Calligraphy. A Guide to Brush Lettering and Brush Pen Techniques.: 9798375955902: Nathaniel, Jill Mlambo: Books
Brush lettering - Everything you need to learn brush lettering (tutorial)