Transcribe the date of publication, distribution, release, broadcast, etc., following the name of the publisher, distributor, etc., preceded by a comma. If the date of publication, distribution, etc., does not appear, supply an accurate date in square brackets, if possible. If the item was never published or distributed, supply a date of production in square brackets, if applicable.
For serial titles, if the title change is ongoing and not yet completed, use an open date, consisting of the beginning date of publication, followed by a hyphen. If the serial title was published over a span of time, give the span of dates over which it was published.