APA (7th ed.) Citation

Valtonen, M. J., & Heidt, J. (2008). A test of a massive binary black hole system and of Einsteins General Relativity in the quasar OJ 287. Nature, 452(6896), .

Chicago Style (17th ed.) Citation

Valtonen, Mauri J., and Jochen Heidt. "A Test of a Massive Binary Black Hole System and of Einsteins General Relativity in the Quasar OJ 287." Nature 452, no. 6896 (2008).

MLA (9th ed.) Citation

Valtonen, Mauri J., and Jochen Heidt. "A Test of a Massive Binary Black Hole System and of Einsteins General Relativity in the Quasar OJ 287." Nature, vol. 452, no. 6896, 2008.