Here are the writings of Mikhail Bakunin. He was the founder of the international anarchist movement during the first socialist international. Bakunin’s writings are foundational in terms of anarchist thinking concerning organisation, critique and strategy:
Michael Bakunin – Selected Writings
RobertMCutler-translator-editor_TheBasicBakunin-Writings-1869-1871_1992_126pp
Guy Aldred – Bakunin’s Writings
michail-bakunin-marxism-freedom-and-the-state