Cita APA

Penrose, R. 1., & Penrose, R. 1. (1972). Techniques of differential topology in relativity. Philadelphia, Pennsylvania: Society for Industrial and Applied Mathematics.

Citación estilo Chicago

Penrose, Roger 1931-, y Roger 1931- Penrose. Techniques of Differential Topology in Relativity. Philadelphia, Pennsylvania: Society for Industrial and Applied Mathematics, 1972.

Cita MLA

Penrose, Roger 1931-, y Roger 1931- Penrose. Techniques of Differential Topology in Relativity. Philadelphia, Pennsylvania: Society for Industrial and Applied Mathematics, 1972.