APA (7th ed.) Citation

European Southern Observatory. (1969). Astronomy and astrophysics. EDP Sciences [etc.].

Chicago Style (17th ed.) Citation

European Southern Observatory. Astronomy and Astrophysics. Les Ulis, France [etc.]: EDP Sciences [etc.], 1969.

MLA (9th ed.) Citation

European Southern Observatory. Astronomy and Astrophysics. EDP Sciences [etc.], 1969.

Warning: These citations may not always be 100% accurate.