एपीए उद्धरण

Tyagi,B.K. (2010). First course in metric spaces. Foundations.

शिकागो स्टाइल उद्धरण

Tyagi,B.K. First Course in Metric Spaces. Chennai: Foundations, 2010.

एमएलए उद्धरण

Tyagi,B.K. First Course in Metric Spaces. Foundations, 2010.