(1960). Vistas in astronomy. Pergamon.
Chicago Style (17th ed.) CitationVistas in Astronomy. New York: Pergamon, 1960.
MLA (9th ed.) CitationVistas in Astronomy. Pergamon, 1960.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.
(1960). Vistas in astronomy. Pergamon.
Chicago Style (17th ed.) CitationVistas in Astronomy. New York: Pergamon, 1960.
MLA (9th ed.) CitationVistas in Astronomy. Pergamon, 1960.