环球杂志社. 环球（2015.22）.
Chicago Style (17th ed.) Citation环球杂志社. 环球（2015.22）.
MLA (8th ed.) Citation环球杂志社. 环球（2015.22）.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.
APA (7th ed.) Citation
环球杂志社. 环球（2015.22）.
Chicago Style (17th ed.) Citation环球杂志社. 环球（2015.22）.
MLA (8th ed.) Citation环球杂志社. 环球（2015.22）.