When citing a book with multiple authors on the reference page:

Question $10$ options:

Include all authors' full names and year of publication.

Include only the first author's last name and initial of first name AND the year of publication.

Include all authors' last names, initial of first and middle $($if applicable$)$ names, AND the year of publication.

Include only the first author's last name followed by et al$.$ AND the year of publication.