List references by number, in the order in which they are cited. |
List the last name and then the initials of each author, in alphabetical order by last name. |
List the last name and then the initials of each of the first 6 authors, in alphabetical order by last name and abbreviating additional authors as “et al.” |
List the last name and then the initials of the first and then the second author, abbreviating additional authors as “et al.” |
List the initials and then the last name of each author, in alphabetical order by first and second initials. |