APA način citiranja (7. izdanje)

Jungnickel, R., & Keller, D. (2003). Foreign-owned Firms in the German Labour Market.

Čikaški stil citiranja (17. izdanje)

Jungnickel, Rolf, i Dietmar Keller. Foreign-owned Firms in the German Labour Market. Hamburg, 2003.

MLA način citiranja (8. izdanje)

Jungnickel, Rolf, i Dietmar Keller. Foreign-owned Firms in the German Labour Market. 2003.