APA (7th ed.) Citation

Holmberg, E. (1937). A study of double and multiple galaxies, together with inquiries into some general metagalactic problems: With an appendix containing a catalogue of 827 double and multiple galaxies. Published by the Observatory.

Chicago Style (17th ed.) Citation

Holmberg, Erik. A Study of Double and Multiple Galaxies, Together with Inquiries into Some General Metagalactic Problems: With an Appendix Containing a Catalogue of 827 Double and Multiple Galaxies. Lund, Sweden: Published by the Observatory, 1937.

MLA (8th ed.) Citation

Holmberg, Erik. A Study of Double and Multiple Galaxies, Together with Inquiries into Some General Metagalactic Problems: With an Appendix Containing a Catalogue of 827 Double and Multiple Galaxies. Published by the Observatory, 1937.