You do it the same way you distinguish every other expression. In RDA, the same rule applies for distinguishing expressions, regardless of whether or not the work is a compilation or has a conventional collective title. 6.27.3 (Authorized Access Point Representing an Expression) says that the AAP for an expression is constructed by combining the AAP for the work plus one or more of the following elements:
Date of expression
Language of expression
Other distinguishing characteristic of expression
Other distinguishing characteristic of expression could be translator, editor, narrator, common designation in reference sources, publisher, or just about anything else.
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From: Program for Cooperative Cataloging [mailto:[log in to unmask]] On Behalf Of Ivan E Calimano
Sent: Monday, August 7, 2017 12:36 PM
To: [log in to unmask]
Subject: [PCCLIST] Addition to $k Selections
I understand that LC goes only to the Selections level without differentiating other editions. My question is what to use to do so and when and what will become the differentiating element.
Publishers sometimes does not include the compiler or editor of a selection of works for a creator. Thus, form what I've seen, the date of publication is been added in lieu of a name. I've seen also the publisher's name or the title from the 245 added to the 240.
100 1 $a Creator, $e author.
240 10 $a Plays [or Poetry, etc.]. $k Selections
245 10 $a Title proper from the item....
264 1 $a place : $b publisher, $c date.
Now, what it is needed to make it different from other Selections?
My choices are, and I want to know which one is correct or appropriate.
240 10 $a Plays [or Poetry, etc.]. $k Selections (date from the 264) OR
240 10 $a Plays [or Poetry, etc.]. $k Selections $s (publisher in the authorized form) OR
240 10 $a Plays [or Poetry, etc.]. $k Selections $s (title from the 245)
The collective wisdom of this group will be really appreciated.
Iván E Calimano, PhD
Head of Bibliographic Services
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787 510 5010