The general advice is to revert to roman within a block of italics. Here are a couple of sources:
- When a title or sentence is italicized, a word that normally would be italicized in running text—such as a foreign word, the scientific name of a plant or animal, or a ship—should appear in roman type. This is called reverse italics.
When a title or sentence is italicized, a word that normally would be italicized in running text—such as a foreign word, the scientific name of a plant or animal, or a ship—should appear in roman type. This is called reverse italics. - from the Editorial Style Guide, Purchase College, State University of New York
- from the Editorial Style Guide, Purchase College, State University of New York
- 8.184 Terms within titles. A term in a quoted title that is itself normally italicized, such as a foreign word, a genus name, or the name of a ship, is set in roman type (“reverse italics”).
8.184 Terms within titles. A term in a quoted title that is itself normally italicized, such as a foreign word, a genus name, or the name of a ship, is set in roman type (“reverse italics”). - karencopyedits, quoting The Chicago Manual of Style
- karencopyedits, quoting The Chicago Manual of Style
