Não informado. (2022). Publications of the United States Naval Observatory. Government Printing Office.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Publications of the United States Naval Observatory. Washington: Government Printing Office, 2022.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Publications of the United States Naval Observatory. Government Printing Office, 2022.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.