एपीए उद्धरण

Ashraf, P. K. (2017). Some studies on signed graphs. Kannur university.

शिकागो स्टाइल उद्धरण

Ashraf, P K. Some Studies on Signed Graphs. Kannur university, 2017.

एमएलए उद्धरण

Ashraf, P K. Some Studies on Signed Graphs. Kannur university, 2017.