IFLA/FIAB section of astronomical librarians and the IAU commission 5. (1973). Bibliography of non-commercial publications of observatories & astronomical societies (Rev. ed.). Sonnenborgh Observatory.
Chicago Style (17th ed.) CitationIFLA/FIAB section of astronomical librarians and the IAU commission 5. Bibliography of Non-commercial Publications of Observatories & Astronomical Societies. Rev. ed. Utrecht: Sonnenborgh Observatory, 1973.
MLA (9th ed.) CitationIFLA/FIAB section of astronomical librarians and the IAU commission 5. Bibliography of Non-commercial Publications of Observatories & Astronomical Societies. Rev. ed. Sonnenborgh Observatory, 1973.
Warning: These citations may not always be 100% accurate.