North American Vexillological Association. NAVA Handbook. North American Vexillological Association.
Chicago-Zitierstil (17. Ausg.)North American Vexillological Association. NAVA Handbook. Oaks, PA: North American Vexillological Association.
MLA-Zitierstil (8. Ausg.)North American Vexillological Association. NAVA Handbook. North American Vexillological Association.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.