If you use author-date in-text citations, order your references list alphabetically by the last name of the first author. For multiple references with the same author or first author, list the single-author references first, then the two-author citations, and the group citations last.
Order of Works with Same First Author
Single-author: arrange chronologically (earliest one first)
Hamilton, F. J. Biochemistry2003,42, 78-86.
Hamilton, F. J. J. Agric. Food Chem.2004,52, 1622-1633.
Same author(s) and same date: arrange chronologically (as accurately as possible) and add lowercase letters a, b, c, immediately after the date in the parentheses.
Hamilton, F. J. J. Agric. Food Chem.2004a,52, 1622-1633.
Hamilton, F. J. J. Org. Chem.2004b,69, 298-306.
Same first author, but different co-authors: come after the single-author entries for the first author and then chronologically.
Scarponi, T. M.; Moreno, S. P. Biochemistry2002, 41, 345-360.
Scarponi, T. M.; Adams, J. S. J. Pharm. Sci.2003,92, 703-712.
Order of Works by Authors with Same Last Name
Alphabetize by first initial.
Moher, J.
Moher, M., & Feigenson, L.
Order of Works by Group Authors
Alphabetize by the first significant word; do not abbreviate name.
Moher, J.
National Institute of Mental Health.
Oliver, M. B.
