International Plant Genetic Resources Institute, International Development Research Centre (Canada), & Brush, S. B. (2000). Genes in the field: On-farm conservation of crop diversity. International Development Research Centre ; Boca Raton, FL : Lewis Publishers.
Cita Chicago (17th ed.)International Plant Genetic Resources Institute, International Development Research Centre (Canada), i Stephen B. Brush. Genes in the Field: On-farm Conservation of Crop Diversity. Rome, Italy : International Plant Genetic Resources Institute ; Ottawa, Canada: International Development Research Centre ; Boca Raton, FL : Lewis Publishers, 2000.
Cita MLA (9th ed.)International Plant Genetic Resources Institute, et al. Genes in the Field: On-farm Conservation of Crop Diversity. International Development Research Centre ; Boca Raton, FL : Lewis Publishers, 2000.