Cita APA (7a ed.)

Siemens, J. C., Hoeft, R. G., & Pauli, A. W. (1993). Soil management.: A Useful guidebook for farm managers with common soil problems (1st edition.). John Deere.

Cita Chicago Style (17a ed.)

Siemens, John C., Robert G. Hoeft, y Arland W. Pauli. Soil Management.: A Useful Guidebook for Farm Managers with Common Soil Problems. 1st edition. Illinois: John Deere, 1993.

Cita MLA (8a ed.)

Siemens, John C., et al. Soil Management.: A Useful Guidebook for Farm Managers with Common Soil Problems. 1st edition. John Deere, 1993.