Παραπομπή σε μορφή APA (7η εκδ.)

Barker, T. (2014). Outlaw Motorcycle Gangs as Organized Crime Groups. Springer International Publishing : Imprint: Springer.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Barker, Thomas. Outlaw Motorcycle Gangs as Organized Crime Groups. Cham: Springer International Publishing : Imprint: Springer, 2014.

Παραπομπή σε μορφή MLA (8th εκδ.)

Barker, Thomas. Outlaw Motorcycle Gangs as Organized Crime Groups. Springer International Publishing : Imprint: Springer, 2014.