APA

Katsuyoshi A., Japan Coal Energy Center, World Energy Congress (18th. : 2001 oct. 21-25 : Buenos Aires) & Japan Coal Energy Center.Coal resources. : .

Chicago

Katsuyoshi Ando, Japan Coal Energy Center, World Energy Congress (18th. : 2001 oct. 21-25 : Buenos Aires) and Japan Coal Energy Center.Coal resources. : .

Harvard

Katsuyoshi A., Japan Coal Energy Center, World Energy Congress (18th. : 2001 oct. 21-25 : Buenos Aires) and Japan Coal Energy Center.Coal resources. : .

MLA

Katsuyoshi Ando, Japan Coal Energy Center, World Energy Congress (18th. : 2001 oct. 21-25 : Buenos Aires) and Japan Coal Energy Center.: . .