APA-referens (7:e uppl.)

Excerpts from the Harmony of Interests: Agricultural, Manufacturing & Commercial. Great Neck Publishing.

Chicago-referens (17:e uppl.)

Excerpts from the Harmony of Interests: Agricultural, Manufacturing & Commercial. Great Neck Publishing.

MLA-referens (9:e uppl.)

Excerpts from the Harmony of Interests: Agricultural, Manufacturing & Commercial. Great Neck Publishing.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.