His The world of labor, 1913.

Theories and forms of political organisation, 1932: t.p. (G.D.H. Cole; M.A.; reader in economics, Univ. of Oxford; member of the Economic Advisory Council to the British government)

World biographical index 12, WWW, Oct. 16, 2003 (Cole, George Douglas Howard, 1889-1959; professor, socialist, writer)

My dear Churchill, 1941: t.p. (Populus [pseudonym of G.H.D. Cole])

University of Sheffield website, 16 June 2008: Library/Left Book Collection (Cole, G.H.D. see also "Populus")