David Griffiths

Head First Rails: A learner's companion to Ruby on Rails

By David Griffiths

Head First C: A Brain-Friendly Guide

By David Griffiths, Dawn Griffiths

Successful People Management: Life Skills for Managers

By David Griffiths

Understanding Data: Principles and Practice of Statistics

By David Griffiths, etc., W. Douglas Stirling (Massey University, USA), K. Lawrence Weldon (Simon Fraser University