https://kohalibrary.pids.gov.ph//cgi-bin/koha/opac-search.pl?q=ccl=Provider%3ANational%20Tax%20Research%20Center&format=rss2 7 0 100 ISBN https://kohalibrary.pids.gov.ph//cgi-bin/koha/opac-detail.pl?biblionumber=7593 Manila: National Tax Research Center, 2012.

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]]> https://kohalibrary.pids.gov.ph//cgi-bin/koha/opac-detail.pl?biblionumber=7594 ISBN https://kohalibrary.pids.gov.ph//cgi-bin/koha/opac-detail.pl?biblionumber=8953 Manila: National Tax Research Center, [n.d.]

]]> https://kohalibrary.pids.gov.ph//cgi-bin/koha/opac-detail.pl?biblionumber=8953 ISBN https://kohalibrary.pids.gov.ph//cgi-bin/koha/opac-detail.pl?biblionumber=9765 By Jurado, Florida J.. Intramuros, Manila National Tax Research Center 2018 . 30 pages

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]]> https://kohalibrary.pids.gov.ph//cgi-bin/koha/opac-detail.pl?biblionumber=9766 ISBN https://kohalibrary.pids.gov.ph//cgi-bin/koha/opac-detail.pl?biblionumber=9803 National Tax Research Center . 17 pages

]]> https://kohalibrary.pids.gov.ph//cgi-bin/koha/opac-detail.pl?biblionumber=9803 ISBN https://kohalibrary.pids.gov.ph//cgi-bin/koha/opac-detail.pl?biblionumber=9804 National Tax Research Center 2021 . 15 pages

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