1. Chemistry of Butter and Buttermaking. II. The Nature of the Fatty Materials in Buttermilk and the Significance of Certain Buttermilk Testing Methods;Bird;Iowa Agr. Expt. Sta. Res. Bul.,1935
2. Caulfield, W.J., and Martin, W.H. How Butter Effects Whipping. Ice Cream Trade Jour., 25, No. 9: 56–59 1929.
3. Combs, W.B. Powdered Buttermilk in Ice Cream. Ice Cream Rev., 10, No. 9: 78–80. 1927.
4. The Phospholipids in Milk. I. Their Distribution Among Some Milk Products;Holm;Jour. Dairy Sci.,1933
5. The Technical Control of Dairy Products;Mojonnier,1925