We've been discussing this here at my library, actually, as we had a 
question about it. We couldn't find a definite instruction but we've seen 
about a dozen full level RDA records which use the [] square brackets in 
the 504 bibliography note where the isn't pagination on the book.



On Oct 25 2012, Lybarger, Kathryn J wrote:

> I wondered about the bibliographical references note here. In AACR2, I 
> would use [207] since the page doesn't have a number in it, but I know 
> that some places in RDA brackets are not used like in AACR2. For example, 
> in a 300 you would do "400 unnumbered pages" instead of "[400] p.".
>
>
> =LDR 01886nam a2200385Ii 4500 =008 
> 121017s2012\\\\enka\\\\\b\\\\001\0\eng\d =040 \\$aKUK$beng$erda$cKUK =020 
> \\$a9781856046954 (paperback) =020 \\$a1856046958 (paperback) =050 
> \4$aZ694$b.W425 2012 =049 \\$aKUKK =100 1\$aWelsh, Anne,$d1972-,$eauthor. 
> =245 10$aPractical cataloguing :$bAACR, RDA and MARC 21 /$cAnne Welsh and 
> Sue Batley. =246 3\$aPractical cataloging =264 \1$aLondon :$bFacet 
> Publishing,$c2012. =264 \4$c(c)2012 =300 \\$axvi, 217 pages 
> :$billustrations ;$c24 cm =336 \\$atext$btxt$2rdacontent =337 
> \\$aunmediated$bn$2rdamedia =338 \\$avolume$bnc$2rdacarrier =520 8\$aThis 
> textbook explores how RDA elements can be incorporated into MARC21. 
> Topics include: an introduction to catalogues and cataloguing standards, 
> publication formats and bibliographic elements, access points and 
> headings, a summary which outlines the major issues and many others. =504 
> \\$aIncludes bibliographical references (pages 207-211) and index. =505 
> 0\$aCatalogues and cataloguing standards -- The FRBRization of the 
> catalogue -- Bibliographic elements -- Access points and headings -- RDA: 
> resource description and access -- AACR and RDA -- MARC 21 -- Practical 
> cataloguing : bringing it all together -- The birth of RDA and the death 
> of MARC? -- Examples. =650 \0$aDescriptive cataloging$vRules. =650 
> \0$aFRBR (Conceptual model) =650 \0$aDescriptive cataloging$vHandbooks, 
> manuals, etc. =630 00$aResource description & access$vHandbooks, manuals, 
> etc. =630 00$aAnglo-American cataloguing rules$vHandbooks, manuals, etc. 
> =650 \0$aMARC formats$vHandbooks, manuals, etc. =700 1\$aBatley, 
> Sue,$eauthor.
>

-- 
Céline Carty
English Cataloguing
Cambridge University Library
Cambridge CB3 9DR