Latvia University of agriculture. (2009). Latvijas Lauksaimniecibas Universitate Raksti: Proceedings of the Latvia University of agriculture. No 22 (317).
Dyfyniad Arddull ChicagoLatvia University of agriculture. Latvijas Lauksaimniecibas Universitate Raksti: Proceedings of the Latvia University of Agriculture. No 22 (317). 2009.
Dyfyniad MLALatvia University of agriculture. Latvijas Lauksaimniecibas Universitate Raksti: Proceedings of the Latvia University of Agriculture. No 22 (317). 2009.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.