If the author's last name and the year of publication are provided in the signal phrase before a quotation, what information is required in the parenthetical citation?

The only information required in the parenthetical citation is the page number

Step-by-step explanation:

Once the last name of the author and the year of publication have been provided in a signal phrase, the only needed information in the parenthesis is the page number where the information or quote has been lifted from. For example: Oscar (2019) wrote, "ceteris paribus all men were created equal" (p. 195).