[header] How to cite an encyclopedia in apa [title] Use the last name of the author and the year of publication for parenthetical citations. [step] Apa in-text citations are parenthetical. This means that a citation should be included in parentheses at the end of a sentence or paragraph that contains information from your encyclopedia article. 
Do this by including the last name of the entry author and year of publication. [substeps] The citation should always be added before the period at the end of the sentence like this: (surname year).