एपीए उद्धरण

(1922). VITAL STATISTICS FOR ENGLAND AND WALES, 1921.

शिकागो स्टाइल उद्धरण

VITAL STATISTICS FOR ENGLAND AND WALES, 1921. 1922.

एमएलए उद्धरण

VITAL STATISTICS FOR ENGLAND AND WALES, 1921. 1922.