Ruffini, R. (1975). Proceedings of the first marcel grossmann meeting on general relativity, organized and held at the international centre for theoretical physics, trieste and istituto di fisica teorica, University of Treiste 7-.. North-Holland Publishing.
Citace podle Chicago (17th ed.)Ruffini, R. Proceedings of the First Marcel Grossmann Meeting on General Relativity, Organized and Held at the International Centre for Theoretical Physics, Trieste and Istituto Di Fisica Teorica, University of Treiste 7-.. Amsterdam: North-Holland Publishing, 1975.
Citace podle MLA (9th ed.)Ruffini, R. Proceedings of the First Marcel Grossmann Meeting on General Relativity, Organized and Held at the International Centre for Theoretical Physics, Trieste and Istituto Di Fisica Teorica, University of Treiste 7-.. North-Holland Publishing, 1975.