Harpham, B. (2020). Project Managers at Work. 1st ed. Apress.
Trích dẫn kiểu ChicagoHarpham, Bruce. Project Managers At Work. 1st Ed. Apress, 2020.
MLA引文Harpham, Bruce. Project Managers At Work. 1st Ed. Apress, 2020.
警告：这些引文格式不一定是100％准确.
APA引文