A special case is made for "non-fiction" reference books such as The Star Trek Encyclopedia, Star Trek Chronology, TNG Technical Manual and DS9 Technical Manual.
יוצאי-דופן הם ספרי עיון שאינם עלילתיים, כגון The Star Trek Encyclopedia,‏ Star Trek Chronology,‏ TNG Technical Manual, ו-DS9 Technical Manual.