Cita APA (7a ed.)
Arndt, R. Saudi Aramco World: September - October 2006, vol. 57, no. 5 : Ibn Khaldun and the Rise and Fall of Empires. Aramco Services.
Cita estilo Chicago (17a ed.)
Arndt, Robert. Saudi Aramco World: September - October 2006, Vol. 57, No. 5 : Ibn Khaldun and the Rise and Fall of Empires. Houston, EUA: Aramco Services.
Cita MLA (9a ed.)
Arndt, Robert. Saudi Aramco World: September - October 2006, Vol. 57, No. 5 : Ibn Khaldun and the Rise and Fall of Empires. Aramco Services.
Precaución: Estas citas no son 100% exactas.