Cita APA (7a ed.)

Timberlake, L. (1987). Only one earth: Living for the future. BBC Books [u.a.].

Cita Chicago Style (17a ed.)

Timberlake, Lloyd. Only One Earth: Living for the Future. London: BBC Books [u.a.], 1987.

Cita MLA (9a ed.)

Timberlake, Lloyd. Only One Earth: Living for the Future. BBC Books [u.a.], 1987.