एपीए उद्धरण

Knapp, B. (2003). Science in our world. Regency publishing.

शिकागो स्टाइल उद्धरण

Knapp, Brian. Science in Our World. Monterey: Regency publishing, 2003.

एमएलए उद्धरण

Knapp, Brian. Science in Our World. Regency publishing, 2003.