एपीए उद्धरण

Yadam Ram Kumar. Success at Your Doorstep. DC Books.

शिकागो स्टाइल उद्धरण

Yadam Ram Kumar. Success at Your Doorstep. Kottayam: DC Books.

एमएलए उद्धरण

Yadam Ram Kumar. Success at Your Doorstep. DC Books.