APA引文

Georgiev Venelin & Longdom Publishing. Functions, Principles and Problems of the Security System.

Chicago Style (17th ed.) Citation

Georgiev Venelin and Longdom Publishing. Functions, Principles and Problems of the Security System.

MLA引文

Georgiev Venelin and Longdom Publishing. Functions, Principles and Problems of the Security System.

警告：這些引文格式不一定是100％准確.