APA (7th ed.) Citation

Nikolaus, v. K., & Watts, P. M. (1986). The game of spheres. The Janus library.

Chicago Style (17th ed.) Citation

Nikolaus, von Kues, and Pauline Moffitt Watts. "The Game of Spheres." The Janus Library 1986.

MLA (8th ed.) Citation

Nikolaus, von Kues, and Pauline Moffitt Watts. "The Game of Spheres." The Janus Library, 1986.