 & Smith, Inc. සම්ප්‍රවේශය 2009-11-30.↑ Degner, Dr. Daniel A. (2004). "Tracheal Collapse". PetEducation.com. Drs. Foster & Smith, Inc. සම්ප්‍රවේශය 2009-11-30.↑ 18.0 18.1 18.2 Ward, Ernest (2009). "Cryptorchidism in Dogs". Shores Animal Clinic. Lifelearn Inc. සම්ප්‍රවේශය 21 January 2011.↑ 19.0 19.1 19.2 19.3 19.4 19.5 Vanderlip, Sharon (2007). The Pomeranian Handbook. Barron's Educational Series. pp. 2–8. ISBN 978-0-7641-3545-3. {{cite book}}: Cite has empty unknown parameter: |coauthors= (help)↑ Boswell, James (1764). Pottle, Frederick A. (ed.). Boswell on the Grand Tour: Germany and Switzerland (First ed.). McGraw-Hill Book Company Inc. p. 165. සම්ප්‍රවේශය 2009-11-29. {{cite book}}: Cite has empty unknown parameter: |coauthors= (help)↑ Thomas, P. (1769) A Tour in Scotland. archive.org [Online]. |Available at=http://archive.org/stream/atourinscotland03penngoog#page/n6/mode/2up |accessdate=19th March 2013).↑ Pennant, Thomas (1776). A Tour in Scotland 1769 (Fourth ed.). Benj 