When both enumeration and chronology are present, both should be recorded and supplied. Enumeration and chronology may be displayed separately or adjacent to each other. Yale displays enumeration and chronology adjacently.
If both enumeration and chronology data are recorded adjacently, the chronology data is recorded in parentheses. If the item does not carry numeric designation and chronological designation is used (e.g., some annual publications), parentheses are not used with the chronology data.
|‡8 0 ‡a 1999:Dez.-2000:Mai
Enumeration and chronology is recorded from lowest enumeration data to highest; earliest date to latest.