Cita APA (7th ed.)

BUTLER, B. (1980). Soil classification for soil survey.: BUTLER, B.E. Clarendon Pr..

Cita Chicago (17th ed.)

BUTLER, B.E. Soil Classification for Soil Survey.: BUTLER, B.E. Oxford: Clarendon Pr., 1980.

Cita MLA (9th ed.)

BUTLER, B.E. Soil Classification for Soil Survey.: BUTLER, B.E. Clarendon Pr., 1980.