Anthony James Pollard 
Wars of the Roses [PDF ebook] 

This collection of nine essays (including the introduction) by leading British scholars addresses recent debates concerning the Wars of the Roses, especially their origins and the balance between self-interest and principle in the motivation of the participants. The collection brings these issues forward for the consideration of sixth-form and undergraduate students. While offering a summation of current viewpoints, the collection also offers new interpretations on several points.