Originally published as 'Mémoires de guerre. L'appel 1940-1942.' Librairie Plon.
OBNB doesn't sell books, but you may be able to find a copy at one of these websites:
War memoirs ♭of! Charles De Gaulle by Charles de Gaulle. Published by Collins in 1955. Publication and catalogue information, links to buy online and reader comments.
obnb.uk is a Good Stuff website.