Cita APA (7a ed.)

Hunt, J., & Battrick, B. (1989). Proceedings of the 23rd. ESLAB Symposium on two topics in X-Ray Background. European Space Agency.

Cita Chicago Style (17a ed.)

Hunt, J., y B. Battrick. Proceedings of the 23rd. ESLAB Symposium on Two Topics in X-Ray Background. Paris: European Space Agency, 1989.

Cita MLA (9a ed.)

Hunt, J., y B. Battrick. Proceedings of the 23rd. ESLAB Symposium on Two Topics in X-Ray Background. European Space Agency, 1989.