North American Vexillological Association. NAVA newsletter. North American Vexillological Association.
Citazione stile Chigago Style (17a edizione)North American Vexillological Association. NAVA Newsletter. [Washington, D. C.]: North American Vexillological Association.
Citatione MLA (8a ed.)North American Vexillological Association. NAVA Newsletter. North American Vexillological Association.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.