एपीए उद्धरण

Sidharthan R. (2005). Book of inventions. Siso books.

शिकागो स्टाइल उद्धरण

Sidharthan R. Book of Inventions. Thiruvananthapuram: Siso books, 2005.

एमएलए उद्धरण

Sidharthan R. Book of Inventions. Siso books, 2005.