एपीए उद्धरण

Bureau of economics and statistics. (1971). Directory of small scale industrial units in the urban areas of Kerala state 1969-70. Bureau of economics and statistics.

शिकागो स्टाइल उद्धरण

Bureau of economics and statistics. Directory of Small Scale Industrial Units in the Urban Areas of Kerala State 1969-70. Trivandrum: Bureau of economics and statistics, 1971.

एमएलए उद्धरण

Bureau of economics and statistics. Directory of Small Scale Industrial Units in the Urban Areas of Kerala State 1969-70. Bureau of economics and statistics, 1971.