2.1.1.1 Commas in a Series
When three or more items appear in a series, use a serial comma (the “Oxford comma”) before the final conjunction. Thus: Nuit, Hadit, and Ra-Hoor-Khuit; ritual, study, and service; author, editor, and proofreader.
When three or more items appear in a series, use a serial comma (the “Oxford comma”) before the final conjunction. Thus: Nuit, Hadit, and Ra-Hoor-Khuit; ritual, study, and service; author, editor, and proofreader.