Não informado. (1966). Bulletin of the Astronomical Institutes of the Netherlands. Astronomical Institutes of the Netherlands.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Bulletin of the Astronomical Institutes of the Netherlands. Amsterdam: Astronomical Institutes of the Netherlands, 1966.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Bulletin of the Astronomical Institutes of the Netherlands. Astronomical Institutes of the Netherlands, 1966.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.