Peter Marris & Colin Murray Parkes 
Attachment Across the Life Cycle [PDF ebook] 

To explain and understand the patterns that attachment play in psychiatric and social problems a body of knowledge has sprung up which owes much to the pioneering work of the late John Bowlby. This book draws together recent theoretical contributions, research findings and clinical data from psychiatrists, psychologists, sociologists and ethologists from Britain, America and Europe.