APA (7th ed.) Citation

Biermann, P., & Wielen, R. (1978). Encounters of spherical galaxies: N-body simulations and comparison with theoretical predictions. The large scale structure of the universe.

Chicago Style (17th ed.) Citation

Biermann, Peter, and Roland Wielen. "Encounters of Spherical Galaxies: N-body Simulations and Comparison with Theoretical Predictions." The Large Scale Structure of the Universe 1978.

MLA (9th ed.) Citation

Biermann, Peter, and Roland Wielen. "Encounters of Spherical Galaxies: N-body Simulations and Comparison with Theoretical Predictions." The Large Scale Structure of the Universe, 1978.