एपीए उद्धरण

Nord, S. S. Bulletin of the Seismological Station Nord. Copenhagen.

शिकागो स्टाइल उद्धरण

Nord, Seismological Station. Bulletin of the Seismological Station Nord. Copenhagen.

एमएलए उद्धरण

Nord, Seismological Station. Bulletin of the Seismological Station Nord. Copenhagen.