International Conference on Aspects of General Relativity and Mathematical Physics Mexico City, Breton, N., Capovilla, R., & Matos, T. (1990). Proceedings of the International Conference on Aspects of General Relativity and Mathematical Physics: In Celebration of the Sixtyfifth Birthday of Professor Jerzy Plebanski. [S.N.].
Παραπομπή σε μορφή Chicago (17η εκδ.)International Conference on Aspects of General Relativity and Mathematical Physics Mexico City, Nora Breton, Riccardo Capovilla, και Tonatiuh Matos. Proceedings of the International Conference on Aspects of General Relativity and Mathematical Physics: In Celebration of the Sixtyfifth Birthday of Professor Jerzy Plebanski. [S.L.]: [S.N.], 1990.
Παραπομπή σε μορφή MLA (9th εκδ.)International Conference on Aspects of General Relativity and Mathematical Physics Mexico City, et al. Proceedings of the International Conference on Aspects of General Relativity and Mathematical Physics: In Celebration of the Sixtyfifth Birthday of Professor Jerzy Plebanski. [S.N.], 1990.