Não informado. (2008). Bulletin of the United States National Museum. Government Printing Office.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Bulletin of the United States National Museum. Washington: Government Printing Office, 2008.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Bulletin of the United States National Museum. Government Printing Office, 2008.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.