Cita APA (7th ed.)

BRIGGS, D. (1981). Sources and methods in geogaphy: Soils. Butterworths.

Cita Chicago (17th ed.)

BRIGGS, David. Sources and Methods in Geogaphy: Soils. London: Butterworths, 1981.

Cita MLA (9th ed.)

BRIGGS, David. Sources and Methods in Geogaphy: Soils. Butterworths, 1981.