APA (7th ed.) Citation

Van den Bergh, S. (1968). The galaxies of the local group. Journal of the Royal Astronomical Society of Canada.

Chicago Style (17th ed.) Citation

Van den Bergh, Sidney. The Galaxies of the Local Group. Toronto: Journal of the Royal Astronomical Society of Canada, 1968.

MLA (9th ed.) Citation

Van den Bergh, Sidney. The Galaxies of the Local Group. Journal of the Royal Astronomical Society of Canada, 1968.