Lihat Juga

• On Opium-Smoking Among the Chinese
  oleh: Smith, G. H.
  Terbitan: (1842)
• Manchoukuo's policy for the eradication of opium-smoking
  Terbitan: (1939)
• Abstract of a paper on Opium smoking in China
  oleh: Smith, G. H.
  Terbitan: (1842)
• The Use of Modified Opium Smoking in Pulmonary Tuberculosis
  oleh: Kesteven, W. Henry
  Terbitan: (1891)
• The encyclopedia Americana: novajo to opium
  Terbitan: (1985)