QUACK

Bu kavram başka kaynaklarda da geçiyor

• Stedman's Medical Dictionary: A Practical Medical Dictionary (1920)
• The American Illustrated Medical Dictionary (1913)
• A Law Dictionary (1910)
• Webster's Condensed Dictionary- A Condensed Dictionary of the English Language (1909)
• Chamber's Twientieth Century Dictionary (1908)
• An Illustrated Dictionary of Medicine, Biology and Allied Sciences (1907)
• Phrases and Names Their Origins and Meanings (1896)
• The Student's Medical Dictionary (1896)
• Chamber's Etymological of the English Language (1895)
• An Illustrated Encyclopedic Medical Dictionary (1894)
• Webster's Practical Dictionary- A Practical Dictionary of the Englih Language (1884)
• A Dictionary of the Vulgar Tongue (1811)
• Quack-Salver — A Dictionary of the Vulgar Tongue (1811)