Sperling, L., & Loevinsohn, M. (1996). Using Diversity: Enhancing and Maintaining Genetic Resources on Farm. International Development Research Centre.
Chicago-viite (17. p.)Sperling, Louise, ja Michael Loevinsohn. Using Diversity: Enhancing and Maintaining Genetic Resources on Farm. New Delhi: International Development Research Centre, 1996.
MLA-viite (9. p.)Sperling, Louise, ja Michael Loevinsohn. Using Diversity: Enhancing and Maintaining Genetic Resources on Farm. International Development Research Centre, 1996.
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