How do you want the bibliography entry to appear exactly and what reference type are you using for the record?
I see the difficulty – having the "In: associated with book title in the absense of an editor complicates things. You might want to instead have an alternative ref type for books of this kind – copy the book section to that template. If you don’t use “Electronic Book Section”, you might edit that one. and assign that ref type to the medical text chapters.
Assuming you want
- Darnell J, Lodish H, Baltimore D. Immunity. In: Molecular Cell Biology. New York: Scientific American Books, Inc.; 1990:1003-1048.
Author|. Title|. In:*Editor, ed^eds|. Translator, trans|. Book Title|. Vol Volume|. Edition ed|. Place Published|: Publisher; Year|:Pages|.
where the * is a placeholder for the “link adjacent” symbol/character which is a tiny diamond.
Tested and attached.
JAMA -no editor-electronic-book-section.ens (35.1 KB)