University of Birmingham. (2006). Collins Cobuild Idioms Dictionary (2nd ed.). HarperCollins.
Cita Chicago Style (17a ed.)University of Birmingham. Collins Cobuild Idioms Dictionary. 2nd ed. Glasgow: HarperCollins, 2006.
Cita MLA (9a ed.)University of Birmingham. Collins Cobuild Idioms Dictionary. 2nd ed. HarperCollins, 2006.
Precaución: Estas citas no son 100% exactas.