एपीए उद्धरण

John R Hampton. (1973). E.C.G Made easy. Churchill livingstone london.

शिकागो स्टाइल उद्धरण

John R Hampton. E.C.G Made Easy. Churchill livingstone london, 1973.

एमएलए उद्धरण

John R Hampton. E.C.G Made Easy. Churchill livingstone london, 1973.