Chicago vs IEEE

• In-text citation: Chicago — a footnote: ¹ Björn Rasch and Jan Born, … 685.; IEEE — [1].
• Reference list title: Chicago — Bibliography; IEEE — References.
• Ordering: Chicago alphabetizes by author; IEEE numbers entries in citation order.
• Chicago traits: First author inverted, additional authors in natural order; Titles use Title Case; articles in quotes, containers in italics.
• IEEE traits: Initials come before surnames: M. Alvarez; Paper titles in quotation marks with sentence-style capitalization; containers italicized.

Identical facts, different arrangement — note the author names, casing, and where the date sits. Already have a citation in one style? Convert it to the other in one click.

Chicago: Chicago's notes-bibliography system cites with footnotes: a superscript number in the text pointing to a note with the source details and page. The bibliography entry shown here contains everything the footnote needs — un-invert the author's name and swap most periods for commas to form the note.

IEEE: IEEE cites in the text with bracketed numbers in order of first appearance: as shown in [1], consolidation requires sleep [2], [5]–[7]. The same number is reused for every later citation of that source, and the reference list is numbered to match — never alphabetized.

Whatever your assignment, department, or journal requires — that overrules everything. When the choice is genuinely yours: pick Chicago if your work sits in history, art history, and publishing, and IEEE for electrical engineering, computer science, and technical fields. Structurally, choose Chicago when uninterrupted prose — discussion happens in the notes matters more to your readers, and IEEE when compactness — citations never interrupt technical prose does.

Then be perfectly consistent — a clean paper in either style beats a hybrid of both, and mixed styles are the first thing graders notice. Since the generator renders both styles from one paste, switching late costs nothing.