एपीए उद्धरण

Concrete Association of India. (1971). Directory of concrete industry in India. C A I.

शिकागो स्टाइल उद्धरण

Concrete Association of India. Directory of Concrete Industry in India. Bombay: C A I, 1971.

एमएलए उद्धरण

Concrete Association of India. Directory of Concrete Industry in India. C A I, 1971.