Sunflower Seed Butter and Almond Butter as Nutrient-Rich Alternatives to Peanut ButterR. Thomas; S.E. Gebhardt · 2010

Method of separation of colouring matters in butter, imitation butter, and so-called butter coloursLeeds, Albert R. · The Analyst · 1887

METHOD OF SEPARATION OF COLORING MATTERS IN BUTTER, IMITATION BUTTER AND SO-CALLED BUTTER COLORS.Leeds, Albert R. · Journal of the American Chemical Society · 1887

[Functional Foods and Nutraceuticals] Handbook of Functional Lipids Volume 20053857 || Cocoa Butter, Cocoa Butter Equivalents, and Cocoa Butter SubstitutesAkoh, Casimir · 2005

Butter and butter adulterantsC.B. Cochran · 1899

BUTTER VS. BUTTER SUBSTITUTES1930

Butter-malting and ButterScientific American · 1858

Artificial Butter and Butter SwindlesScientific American · 1893