Cita APA (7a ed.)
Gould, D., & O'brien, K. Guinness Book of the 20th Century: Millennium Edition. Guinness World Records.
Cita estilo Chicago (17a ed.)
Gould, David, y Karen O'brien. Guinness Book of the 20th Century: Millennium Edition. Londres, Inglaterra: Guinness World Records.
Cita MLA (9a ed.)
Gould, David, y Karen O'brien. Guinness Book of the 20th Century: Millennium Edition. Guinness World Records.
Precaución: Estas citas no son 100% exactas.