APA (7th ed.) Citation

Flag Research Center (Winchester, Mass.). Flag information sources: A supplement to The flag bulletin / published by the Flag Research Center. The Flag Research Center.

Chicago Style (17th ed.) Citation

Flag Research Center (Winchester, Mass.). Flag Information Sources: A Supplement to The Flag Bulletin / Published by the Flag Research Center. Winchester, Mass.: The Flag Research Center.

MLA (8th ed.) Citation

Flag Research Center (Winchester, Mass.). Flag Information Sources: A Supplement to The Flag Bulletin / Published by the Flag Research Center. The Flag Research Center.

Warning: These citations may not always be 100% accurate.