Cita APA (7a ed.)

Miller, R. W., & Donahue, R. L. Soils: An introduction to soils and plant growth (6th ed.).

Cita Chicago Style (17a ed.)

Miller, Raymond W., y Roy Luther Donahue. Soils: An Introduction to Soils and Plant Growth. 6th ed.

Cita MLA (9a ed.)

Miller, Raymond W., y Roy Luther Donahue. Soils: An Introduction to Soils and Plant Growth. 6th ed.