APA-viite (7. p.)
ebrary, Inc, Evenson, R. E., & Gollin, D. (2003). Crop variety improvement and its effect on productivity: The impact of international agricultural research. CABI Pub..
Chicago-viite (17. p.)
ebrary, Inc, Robert E. Evenson, ja Douglas Gollin. Crop Variety Improvement and Its Effect on Productivity: The Impact of International Agricultural Research. Wallingford, Oxon, UK ; Cambridge, MA, USA: CABI Pub., 2003.
MLA-viite (9. p.)
ebrary, Inc, et al. Crop Variety Improvement and Its Effect on Productivity: The Impact of International Agricultural Research. CABI Pub., 2003.
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