Latvia University of agriculture. (2009). Latvijas Lauksaimniecibas Universitate Raksti: Proceedings of the Latvia University of agriculture. No 22 (317).
Chicago-čujuhus (17. p.)Latvia University of agriculture. Latvijas Lauksaimniecibas Universitate Raksti: Proceedings of the Latvia University of Agriculture. No 22 (317). 2009.
MLA-čujuhus (9. p.)Latvia University of agriculture. Latvijas Lauksaimniecibas Universitate Raksti: Proceedings of the Latvia University of Agriculture. No 22 (317). 2009.
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