एपीए उद्धरण

Samuel Walker, C. M. (2005). The police in american an introduction.

शिकागो स्टाइल उद्धरण

Samuel Walker, Charles M.Katz. The Police in American an Introduction. 2005.

एमएलए उद्धरण

Samuel Walker, Charles M.Katz. The Police in American an Introduction. 2005.