North American Vexillological Association. NAVA news: Newsletter of the North American Vexillological Association. North American Vexillological Association.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNorth American Vexillological Association. NAVA News: Newsletter of the North American Vexillological Association. Washington, D. C. ; Trenton, NJ: North American Vexillological Association.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNorth American Vexillological Association. NAVA News: Newsletter of the North American Vexillological Association. North American Vexillological Association.
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