Cita APA (7a ed.)
Williamson, T. (2010). The origins of Hertfordshire. Hertfordshire Publications.
Cita Chicago Style (17a ed.)
Williamson, Tom. The Origins of Hertfordshire. Hatfield, Hertfordshire: Hertfordshire Publications, 2010.
Cita MLA (9a ed.)
Williamson, Tom. The Origins of Hertfordshire. Hertfordshire Publications, 2010.
Precaución: Estas citas no son 100% exactas.