Cita APA (7th ed.)

Joffe, J. S. (1949). The abc of Soils . Pedology Publications.

Cita Chicago (17th ed.)

Joffe, Jacob S. The Abc of Soils . Brunswick, N.J.: Pedology Publications, 1949.

Cita MLA (9th ed.)

Joffe, Jacob S. The Abc of Soils . Pedology Publications, 1949.