APA引文

Williams, G. B. (2020). Online Business Security Systems. Springer US.

Trích dẫn kiểu Chicago

Williams, Godfried B. Online Business Security Systems. Springer US, 2020.

MLA引文

Williams, Godfried B. Online Business Security Systems. Springer US, 2020.

警告：這些引文格式不一定是100％准確.