Berle, G. (1990). Planning and forming your company. John Wiley & Sons.
Cita Chicago Style (17a ed.)Berle, Gustav. Planning and Forming Your Company. New York [etc.]: John Wiley & Sons, 1990.
Cita MLA (9a ed.)Berle, Gustav. Planning and Forming Your Company. John Wiley & Sons, 1990.
Precaución: Estas citas no son 100% exactas.