Cita APA (7a ed.)

Ashmead, D. (1997). Standing room only: Our overcrowded planet. Robert Hale.

Cita Chicago Style (17a ed.)

Ashmead, Douglas. Standing Room Only: Our Overcrowded Planet. London: Robert Hale, 1997.

Cita MLA (9a ed.)

Ashmead, Douglas. Standing Room Only: Our Overcrowded Planet. Robert Hale, 1997.