एपीए उद्धरण

Natural Research Council, chemical utilization of coal (Committe on-). Chemistry of coal utilization. John Wiley & Sons.

शिकागो स्टाइल उद्धरण

Natural Research Council, chemical utilization of coal (Committe on-). Chemistry of Coal Utilization. New York: John Wiley & Sons.

एमएलए उद्धरण

Natural Research Council, chemical utilization of coal (Committe on-). Chemistry of Coal Utilization. John Wiley & Sons.