Johnstone Ainsley Johnstone & Johnstone Matthew Johnstone 
Byw gyda Chi Du [PDF ebook] 

A volume that explores the process of taking control of your life during periods of depression, i.e. when the Black Dog is around. A sensitive, thoughtful and humorous guide for people wishing to support those who suffer from depression, being a sequel to
Roedd Gen i Gi Du. It contains practical advice on how to recognise the symptoms and how to control the Black Dog.