Cita APA (7th ed.)

Goldsmith, E. (1990). 5000 days to save the planet. Hamlyn.

Cita Chicago (17th ed.)

Goldsmith, Edward. 5000 Days to Save the Planet. London: Hamlyn, 1990.

Cita MLA (9th ed.)

Goldsmith, Edward. 5000 Days to Save the Planet. Hamlyn, 1990.