Cita APA (7a ed.)

Horton, D. E. (1988). Underground crops: Long-term trends in production of roots and tubers. Winrock International Institute for Agricultural Development.

Cita Chicago Style (17a ed.)

Horton, Douglas E. Underground Crops: Long-term Trends in Production of Roots and Tubers. Morrilton: Winrock International Institute for Agricultural Development, 1988.

Cita MLA (8a ed.)

Horton, Douglas E. Underground Crops: Long-term Trends in Production of Roots and Tubers. Winrock International Institute for Agricultural Development, 1988.