@book{Trotsky, author = {Trotsky, L.}, title = {The Living Thoughts of Karl Marx, based on >Capital: A Critique of Political Economy<, presented by Leon Trotsky, New York and Toronto (Longmans, Green and Co) 1939,}, language = {en} } @book{Trotsky, author = {Trotsky, L.}, title = {My Life, New York (Charles Scribner's Sons) 1930.}, language = {en} }