APA način citiranja

Vallen, G. K., & Vallen, J. J. (2000). Check-in check-out (6th ed.). Upper Saddle River, NJ: Prentice Hall.

Čikaški stil citiranja

Vallen, Gary K., i Jerome J. Vallen. Check-in Check-out. 6th ed. Upper Saddle River, NJ: Prentice Hall, 2000.

MLA način citiranja

Vallen, Gary K., i Jerome J. Vallen. Check-in Check-out. 6th ed. Upper Saddle River, NJ: Prentice Hall, 2000.