Secker & Warburg, 1938
– Modern Publishers, 1947
– Gordon Press, 1972
– Pluto Press, 1989

– Preface by Noam Chomsky. Introduction by Nicolas Walter. Edinburg: AK Press, 2004. ISBN 1-902593-928. 116 p.

This new AK edition includes an introduction from Noam Chomsky and a lengthy historical and biographical preface from Nicolas Walter.

"In 1937, at the behest of Emma Goldman, Rudolf Rocker (1873–1958) penned this political and philosophical masterpiece as an introduction to the ideals fueling the Spanish social revolution and resistance to capitalism the world over. Within, he offers an introduction to anarchist ideas, a history of the international workers movement, and an outline of the strategies and tactics embraced at the time (internationalism, federalism, anti-militarism, direct action, sabotage, and the General Strike)".