Gaya APA

Fischer,W.H, . (1982). Coal Trade Statistics; A Country by Country of Coking Coal, Steam Coal, Production, Consumption, Imports and Exports . : The Financial Times Business Information Ltd.

Gaya MLA

Fischer,W.H, . "Coal Trade Statistics; A Country by Country of Coking Coal, Steam Coal, Production, Consumption, Imports and Exports". : The Financial Times Business Information Ltd, 1982. Text.