Cita APA (7a ed.)
(2007). GBS: Guinness is Guinness. Marshall Cavendish Limited.
Cita Chicago Style (17a ed.)
GBS: Guinness Is Guinness. Marshall Cavendish Limited, 2007.
Cita MLA (9a ed.)
GBS: Guinness Is Guinness. Marshall Cavendish Limited, 2007.
Precaución: Estas citas no son 100% exactas.