Cita APA (7th ed.)

Beazley, M. (1993). Caring for the earth: A stratergy for survival. IUCN.

Cita Chicago (17th ed.)

Beazley, Mitchell. Caring for the Earth: A Stratergy for Survival. London: IUCN, 1993.

Cita MLA (9th ed.)

Beazley, Mitchell. Caring for the Earth: A Stratergy for Survival. IUCN, 1993.