एपीए उद्धरण

Consultancy and contract engineering orgaisations. (1975). Guide for selection of consultancy organisation.

शिकागो स्टाइल उद्धरण

Consultancy and contract engineering orgaisations. Guide for Selection of Consultancy Organisation. 1975.

एमएलए उद्धरण

Consultancy and contract engineering orgaisations. Guide for Selection of Consultancy Organisation. 1975.