1. Veterinary Pharmacology and Therapeutics;Riviere,1995
2. Veterinary Pharmacology and Therapeutics;Riviere,1995
3. U.S. Code of Federal Regulations, Title 21, Part 556, Section 150, 500, 720, U.S. Government Printing Office, Washington DC, 2005 (Chapter 1). http://www.fda.gov.
4. The European Agency for the Evaluation of Medicinal Products, Committee for Veterinary Medicinal Products. Oxytetracycline, Tetracycline, Chlortetracycline, Summary Report (3), EMEA/MRL/023/95. http://www.emea.eu.int/htms/vet/mrls/a-zmrl.htm.
5. Codex Alimentarius Commission, Codex Alimentarius: Veterinary Drug Residues in Food, Maximum Residue Limits, Chlortetracycline/Oxytetracycline/Tetracycline, Last Update 20 July 2005. http://www.faostat.fao.org/faostat/collections.