何怀宏. (2020). 人类还有未来吗: Human civilization at risk. 广西师范大学出版社.
Chicago (17e ed.) Bronvermelding何怀宏. 人类还有未来吗: Human Civilization at Risk. 广西师范大学出版社, 2020.
MLA (8e ed.) Bronvermelding何怀宏. 人类还有未来吗: Human Civilization at Risk. 广西师范大学出版社, 2020.
Let op: Deze citaties zijn niet altijd 100% accuraat.