@misc{Fromm, author = {Fromm, Erich}, title = {Preface to Philosophy and Revolution, New York (Columbia University Press), 1989, pp xxi-xxii.}, number = {original publication / Erstver{\"o}ffentlichung}, language = {en} } @misc{Fromm, author = {Fromm, Erich}, title = {Vorwort}, series = {R. Dunayevskaya, Philosophy and Revolution. Erstver{\"o}ffentlichung in: Lutz von Werder (Ed.), Der unbekannte Fromm. Biographische Studien (Forschungen zu Erich Fromm, Band 2), Frankfurt (Haag und Herchen) 1987, pp. 59f.}, journal = {R. Dunayevskaya, Philosophy and Revolution. Erstver{\"o}ffentlichung in: Lutz von Werder (Ed.), Der unbekannte Fromm. Biographische Studien (Forschungen zu Erich Fromm, Band 2), Frankfurt (Haag und Herchen) 1987, pp. 59f.}, language = {de} } @misc{Fromm, author = {Fromm, Erich}, title = {Vorwort in: Raya Dunayevskaya >Philosophy and Revolution<}, series = {Erich Fromm E-Book-Edition, M{\"u}nchen (Open Publishing) 2015.}, journal = {Erich Fromm E-Book-Edition, M{\"u}nchen (Open Publishing) 2015.}, number = {enclosed in German Ebook Collected Works / in Deutscher E-Book-Gesamtausgabe enthalten}, language = {de} }