एपीए उद्धरण

Bowood, R. (1961). Great Inventions. Ladybird Books.

शिकागो स्टाइल उद्धरण

Bowood, Richard. Great Inventions. Loughborough: Ladybird Books, 1961.

एमएलए उद्धरण

Bowood, Richard. Great Inventions. Ladybird Books, 1961.