Flag Research Center (Winchester, Mass.). The flag bulletin newsletter: A bimonthly supplement to The flag bulletin / published by the Flag Research Center. The Flag Research Center.
Παραπομπή σε μορφή Chicago (17η εκδ.)Flag Research Center (Winchester, Mass.). The Flag Bulletin Newsletter: A Bimonthly Supplement to The Flag Bulletin / Published by the Flag Research Center. Winchester, Mass.: The Flag Research Center.
Παραπομπή σε μορφή MLA (8th εκδ.)Flag Research Center (Winchester, Mass.). The Flag Bulletin Newsletter: A Bimonthly Supplement to The Flag Bulletin / Published by the Flag Research Center. The Flag Research Center.
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