International School of Physics "Enrico Fermi.", Società italiana di fisica, & Ehlers, J. (1979). Isolated gravitating systems in general relativity, Varenna on Lake Como, Villa Monastero, 28th June-10th July 1976. North-Holland Pub. Co..
Цитирование в стиле Чикаго (17-е изд.)International School of Physics "Enrico Fermi.", Società italiana di fisica, и Jürgen Ehlers. Isolated Gravitating Systems in General Relativity, Varenna on Lake Como, Villa Monastero, 28th June-10th July 1976. Amsterdam ; New York: North-Holland Pub. Co., 1979.
Цитирование MLA (8-е изд.)International School of Physics "Enrico Fermi.", et al. Isolated Gravitating Systems in General Relativity, Varenna on Lake Como, Villa Monastero, 28th June-10th July 1976. North-Holland Pub. Co., 1979.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.