If an abbreviation that takes a final point ends a sentence, this final point functions as the full stop.
In the case of questions and exclamations, however, finish the sentence with the final point of the abbreviation followed by a question mark or exclamation mark.
 | The new faculty service provides updates on roundtables, forums, seminars, courses, etc. |
| This research is the initiative of a number of companies, including Apple Inc. |
| The tour of the Aula Magna will end at 2.30 p.m. |
In the case of questions and exclamations, however, finish the sentence with the final point of the abbreviation followed by a question mark or exclamation mark.
| Can this department really base its future decisions on the findings of Brown et al.? |
| This was hardly the position adopted by Washington D.C.! |
Recommended citation:
«Sentences ending in abbreviations» [en línia]. A: Llibre d’estil de la Universitat de Barcelona. Barcelona: Universitat de Barcelona. Serveis Lingüístics. <https://www.ub.edu/llibre-estil/criteri.php?id=2286> [consulta: 26 abril 2024].