एपीए उद्धरण

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

शिकागो स्टाइल उद्धरण

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

एमएलए उद्धरण

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