1. 2008 Nestlé History http://www.nestle.com/AllAbout/History/HistoryList.htm.
2. Epidemiological studies of Q fever in southern California;Bell;Journal of the American Medical Association,1950
3. Borden , G. 1856 Improvement in Concentration of Milk
4. Concentrated and manufactured milk;Cullip;Journal of the Society of Dairy Technology,1966