Cita APA (7a ed.)
Friedrich W. Hehl, C. K. Black Holes: Theory and Observation: Proceedings of the 179th W.E. Heraeus Seminar Held at Bad Honnef, Germany, 18.22 August 1997. Springer.
Cita estilo Chicago (17a ed.)
Friedrich W. Hehl, Claus Kiefer. Black Holes: Theory and Observation: Proceedings of the 179th W.E. Heraeus Seminar Held at Bad Honnef, Germany, 18.22 August 1997. Berlín, Alemania: Springer.
Cita MLA (9a ed.)
Friedrich W. Hehl, Claus Kiefer. Black Holes: Theory and Observation: Proceedings of the 179th W.E. Heraeus Seminar Held at Bad Honnef, Germany, 18.22 August 1997. Springer.
Precaución: Estas citas no son 100% exactas.