APA-referens (7:e uppl.)

Grubb, E. H., & Guilford, W. S. (1912). The potato: A compilation of information from every available source. Doubleday, Page & Co..

Chicago-referens (17:e uppl.)

Grubb, Eugene H., och W. S. Guilford. The Potato: A Compilation of Information from Every Available Source. Garden City, N.Y.: Doubleday, Page & Co., 1912.

MLA-referens (8:e uppl.)

Grubb, Eugene H., och W. S. Guilford. The Potato: A Compilation of Information from Every Available Source. Doubleday, Page & Co., 1912.