APA način citiranja (7. izdanje)

Williams, G. (1990). Establishing an effective economic regulatory policy for the European airline industry.

Čikaški stil citiranja (17. izdanje)

Williams, George. Establishing an Effective Economic Regulatory Policy for the European Airline Industry. 1990.

MLA način citiranja (8. izdanje)

Williams, George. Establishing an Effective Economic Regulatory Policy for the European Airline Industry. 1990.