Manuscript Preparation, Copyediting, and Proofreading
Q. If a book contains only one table, is it necessary to number it?
A. No. In that case, a number would serve no purpose. Even with many tables, numbers are not always needed. Assign numbers if the author uses them to refer to the tables elsewhere in the text, or if you think readers would find them helpful for citing—for instance, in digital publications without page numbers.