I give below some books that have been helpful on my writing journey:-
Writing Down the Bones - Natalie Goldberg
Shambhala - 2006 - ISBN 1590303164
Love Writing - Sue Moorcroft
Accent Press - 2010 - ISBN 9781906373993
Writing Historical Fiction - Marina Oliver
Studymates - 2005 - ISBN 1842850776
12 Point Guide to Writing Romance - Kate Walker
Studymates - 2008 - ISBN 9781842851319
Writing From Life - Lynne Hackles
How To Books - 2010 - ISBN 9781845284190
The Creative Writing Coursebook - Edited by Julia Bell and Paul Magrs
Macmillan - 2001 - ISBN 9780333782255