Cita APA

Greene, R. P. (1980). Future coal prospects: Country and regional assessments. Cambridge: Ballinger Publishing.

Chicago Style Citation

Greene, Robert P. Future Coal Prospects: Country and Regional Assessments. Cambridge: Ballinger Publishing, 1980.

Cita MLA

Greene, Robert P. Future Coal Prospects: Country and Regional Assessments. Cambridge: Ballinger Publishing, 1980.

Atenció: Aquestes cites poden no estar 100% correctes.