एपीए उद्धरण

Levitt, T. (1962). Innovation in marketing. McGraw hill book house.

शिकागो स्टाइल उद्धरण

Levitt, Theodore. Innovation in Marketing. McGraw hill book house, 1962.

एमएलए उद्धरण

Levitt, Theodore. Innovation in Marketing. McGraw hill book house, 1962.