एपीए उद्धरण

Singleton, A. D., & Spielman, S. E. (2013). The Past, Present and Future of Geodemographic Research in the United States and United Kingdom. Prof Geogr.

शिकागो स्टाइल उद्धरण

Singleton, Alexander D., और Seth E. Spielman. "The Past, Present and Future of Geodemographic Research in the United States and United Kingdom." Prof Geogr 2013.

एमएलए उद्धरण

Singleton, Alexander D., और Seth E. Spielman. "The Past, Present and Future of Geodemographic Research in the United States and United Kingdom." Prof Geogr 2013.