APA način citiranja

Archer, M. (2008). Proactive opt-in already exists. BMJ Publishing Group Ltd.

Čikaški stil citiranja

Archer, Michael. Proactive Opt-in Already Exists. BMJ Publishing Group Ltd, 2008.

MLA način citiranja

Archer, Michael. Proactive Opt-in Already Exists. BMJ Publishing Group Ltd, 2008.

Upozorenje: Ovi citati možda nisu uvijek 100% točni.