APA (7th ed.) Citation

Snodgrass, K. (1930). Margarine as a butter substitute. Food research institute.

Chicago Style (17th ed.) Citation

Snodgrass, Katharine. Margarine as a Butter Substitute. Stanford University, Calif.: Food research institute, 1930.

MLA (9th ed.) Citation

Snodgrass, Katharine. Margarine as a Butter Substitute. Food research institute, 1930.