Παραπομπή APA

Vacca, J. R. (2007). Biometric technologies and verification systems. Butterworth- Heinemann.

Παραπομπή Chicago Style

Vacca, John R. Biometric Technologies and Verification Systems. Burlington: Butterworth- Heinemann, 2007.

Παραπομπή MLA

Vacca, John R. Biometric Technologies and Verification Systems. Butterworth- Heinemann, 2007.