(1992). Earth Summit '92. Switzerland: Asea Brown Boveri.
Trích dẫn kiểu ChicagoEarth Summit '92. Switzerland: Asea Brown Boveri, 1992.
MLA引文Earth Summit '92. Switzerland: Asea Brown Boveri, 1992.
警告：这些引文格式不一定是100％准确.
APA引文
(1992). Earth Summit '92. Switzerland: Asea Brown Boveri.
Trích dẫn kiểu ChicagoEarth Summit '92. Switzerland: Asea Brown Boveri, 1992.
MLA引文Earth Summit '92. Switzerland: Asea Brown Boveri, 1992.