1. Knowledge and space;G Abel,2008
2. Abrams, R. H. (1969). Preachers present arms: The role of the American churches and clergy in World Wars I and II, with some observations on the war in Vietnam (Rev. ed.). Scottdale, PA: Herald Press.
3. Ahmed, M. D. (1988). Traditionelle Formen der Erziehung in der Islamischen Welt [Traditional forms of education in the Islamic world]. Zeitschrift für Kulturaustausch, 38, 332–337.
4. Allen, A. (1999). The power of feminist theory: Domination, resistance, solidarity. Boulder, CO: Westview Press.
5. Anacker, M. (2004). Wissen VI. 19. und 20. Jahrhundert [Knowledge, subsection VI: Nineteenth and twentieth centuries]. In J. Ritter, K. Gründer, & G. Gabriel (Eds.), Historisches Wörterbuch der Philosophie: Vol. 12. W–Z [CD-Rom] (pp. 891–900). Basel, Switzerland: Schwabe.