Спуштач језика — разлика између измена

* {{Cite book |ref= harv|last1=Gilbert|first1=LaBritta|last2=Greigg|first2=Linda|title=Do touch: instant, easy hands-on learning experiences for young children|publisher=Gryphon House|year=1989| ref = harv}}

* {{Cite book |ref= harv|last=Cohen|first=J. Solis|title=Diseases of the Throat and Nasal Passages: A Guide to the Diagnosis and Treatment of Affections of the Pharynx, Oesophagus, Trachea, Larynx, and Nares|chapter=Chapter II, Examination of the Throat and Nasal Passages|publisher=W. Wood|year=1884|page=742| ref = harv}}

* {{Cite book |ref= harv|last1=Wood|first1=Kent|last2=LaBan|first2=Ric|title=N Scale Model Railroad That Grows|publisher=Kalmbach Publishing|year=1996| ref = harv}}