APA (7th ed.) Citation

Barker, G. (1999). Companion encyclopedia of archaeology. Routledge.

Chicago Style (17th ed.) Citation

Barker, Graeme. Companion Encyclopedia of Archaeology. London: Routledge, 1999.

MLA (9th ed.) Citation

Barker, Graeme. Companion Encyclopedia of Archaeology. Routledge, 1999.