APA引文

Qayyum, A., & Zawacki-Richter, O. (2020). Open and Distance Education in Australia, Europe and the Americas. Springer Singapore.

Trích dẫn kiểu Chicago

Qayyum, Adnan, và Olaf Zawacki-Richter. Open and Distance Education in Australia, Europe and the Americas. Springer Singapore, 2020.

MLA引文

Qayyum, Adnan, và Olaf Zawacki-Richter. Open and Distance Education in Australia, Europe and the Americas. Springer Singapore, 2020.

警告：這些引文格式不一定是100％准確.