APA

Speight J. G., . (1983). The chemistry and technology of coal. New York: Marcel Dekker.

Chicago

Speight J G, . 1983. The chemistry and technology of coal. New York: Marcel Dekker.

Harvard

Speight J. G., . (1983). The chemistry and technology of coal. New York: Marcel Dekker.

MLA

Speight J G, . The chemistry and technology of coal. New York: Marcel Dekker. 1983.