(2019). 环 球．2019,no.20-22,24,26.
Chicago Style (17th ed.) Citation环 球．2019,no.20-22,24,26. 2019.
Cita MLA环 球．2019,no.20-22,24,26. 2019.
Atenció: Aquestes cites poden no estar 100% correctes.
Cita APA
(2019). 环 球．2019,no.20-22,24,26.
Chicago Style (17th ed.) Citation环 球．2019,no.20-22,24,26. 2019.
Cita MLA环 球．2019,no.20-22,24,26. 2019.