Line and Wash in the Urban Landscape: Sketching With Watercolour Ink

Watercolour and Beyond: Exploring the Frontiers of Landscape Painting

Pen and Wash: An Artist’s Guide to Combining Ink Watercolour

Sketching in the City: Tools and Techniques for Urban Artist (Art City)

the Urban Sketching Handbook Working with Color: Techniques for Using Watercolor and...