Uniforms and Decorations of World Wars I & II Phoebus Heraldry and Regalia of War Edited by Bernard Fitzsimons BPC Publishing Ltd., UK, 1973 printed in Belgium
source: https://mbarrick.tumblr.com/post/685078565610455040
Source: https://www.mbarrick.com/blog/220524/uniforms-and-decorations-world-wars-i-ii