APA-Zitierstil (7. Ausg.)

Sillanpää, A., Heidt, J., & Bock, H. A. (1994). Coordinated multifrequency observations of OJ 287 and Mk 421 (March 1993). Multi-wavelength continuum emission of agn.

Chicago-Zitierstil (17. Ausg.)

Sillanpää, Aimo, Jochen Heidt, und Holger Arne Bock. "Coordinated Multifrequency Observations of OJ 287 and Mk 421 (March 1993)." Multi-wavelength Continuum Emission of Agn 1994.

MLA-Zitierstil (9. Ausg.)

Sillanpää, Aimo, et al. "Coordinated Multifrequency Observations of OJ 287 and Mk 421 (March 1993)." Multi-wavelength Continuum Emission of Agn, 1994.