Nordlund, K. V., and E. F. Garrett. “Rumenocentesis: A Technique for Collecting Rumen Fluid for the Diagnosis of Subacute Rumen Acidosis in Dairy Herds”. The Bovine Practitioner, vol. 1994, no. 28, Sept. 1994, pp. 109-12, doi:10.21423/bovine-vol1994no28p109-112.