एपीए उद्धरण

Isaac, K. A. Libraries in distance education. Ess Ess Publications.

शिकागो स्टाइल उद्धरण

Isaac, K A. Libraries in Distance Education. Delhi: Ess Ess Publications.

एमएलए उद्धरण

Isaac, K A. Libraries in Distance Education. Ess Ess Publications.