«In Search of the Ploughman's Lunch». h2g2 (The Hitchhiker's Guide to the Galaxy) - an unconventional guide to Life, The Universe and Everything. United Kingdom: British Broadcasting Corporation (BBC). 10 de noviembre de 2005. Consultado el 14 de septiembre de 2012. «The ploughman's is a simple meal consisting of the traditional ingredients of cheese, bread, butter and pickles.»
