Yes, APA reference lists must be alphabetised by the first author’s surname. When two authors share the same surname, alphabetise next by their first initial, and if that also matches, then by the middle initial or full first name.
Sources with an organisational author, such as the NHS or Department of Health, are alphabetised by the first significant word of that organisation’s name; sources with no named author at all are alphabetised by the title instead.
If you cite several works by the same author, order those entries chronologically by publication year, oldest first, rather than alphabetically by title; entries with no date at all are usually placed first, labelled ‘n.d.’ for ‘no date’.
Consistent alphabetical ordering matters because it lets your marker or reader locate any in-text citation in your reference list quickly; a reference list that mixes ordering approaches or skips entries is one of the easiest formatting errors to spot.
Browse our APA referencing guide for more formatting rules, or if you would rather have your reference list checked professionally, our referencing and citation support service reviews ordering and formatting accuracy.


