Reference Style (sci-citation)

When to trigger

• References are in author–date (APA/Harvard) or Nature style and must become Science style.
• The reference list is not ordered by citation appearance.
• Author lists are truncated with "et al." in the bibliography.
• Notes and references are split when Science combines them.

Science citation mechanics

• Numbered, in order of appearance in the text, as italic numbers in parentheses: (1), (2, 3), (4–6).
• A single reference list numbered consecutively; in Science, main text and Supplementary Materials share one continuous numbering (the SM continues the count). Confirm against current guidelines, but design for one list.
• Notes and references are combined — explanatory notes get a number in the same list.
• The reference list gives full author lists (Science does not truncate to "et al." in the bibliography for typical author counts).
• Journal titles abbreviated (per standard abbreviations); include volume, page (or article number), year.

Reference formats (shape)