The preferred source is the title frame (RDA 2.2.2.2). If there is no title frame, an eye-readable header, commonly found on microfiche, may be used as a substitute. If the title on the header is given in an abbreviated form, or, as is the case with most microfilms, if there is no eye-readable header, the container or accompanying material may be substituted as the preferred source.
Title proper (245). Always give the source of title at the end of the “Description based on:” note in 588, preceded by a semicolon: is derived from.
588 0# $a Jan./Feb. 2015; title from title frame.
588 0# $a January 2005; title from eye-readable header.
588 0# $a 1995; title from container.
Publication Information. Sources for the micropublisher, distributor, and/or manufacturer are generally the microform title frame, container, the micropublisher's accompanying printed sales information, or the micropublisher’s web site. Sources from outside of the resource itself must be bracketed. If no information is available, input [Place of publication not identified] : $b [Publisher not identified] in the appropriate 264 field.