His The nabobs, 1932 (T.G.P. Spear)

India remembered, 2010: p. 4 of cover (Percival Spear; English historian who taught modern Indian social hist. at Cambridge U. and St. Stephen's Coll.; d. 1982)

Historia de la India II 2001: t.p .(Percival Spears)

Wikipedia, vía WWW, Jan 19, 2016: (Thomas George Percival Spear (1901-1982) was an English historian who spent much of his life living and teaching in India. An accomplished historian of modern Indian social history, he taught at both Cambridge University and St. Stephen's College with great distinction) https://en.wikipedia.org/wiki/Percival_Spear