APA način citiranja (7. izdanje)

Vollmer Christopher & Precourt Geoffrey. (2008). Always On. Tata Mc Graw -Hill Publishing Company Limited.

Čikaški stil citiranja (17. izdanje)

Vollmer Christopher i Precourt Geoffrey. Always On. New Delhi: Tata Mc Graw -Hill Publishing Company Limited, 2008.

MLA način citiranja (9. izdanje)

Vollmer Christopher i Precourt Geoffrey. Always On. Tata Mc Graw -Hill Publishing Company Limited, 2008.