APA (7th ed.) Citation

European Space Agency, Reinhard, R., & Battrick, B. (1986). The Giotto mission: Its scientific investigations. European Space Agency.

Chicago Style (17th ed.) Citation

European Space Agency, R. Reinhard, and B. Battrick. The Giotto Mission: Its Scientific Investigations. Paris, France: European Space Agency, 1986.

MLA (8th ed.) Citation

European Space Agency, et al. The Giotto Mission: Its Scientific Investigations. European Space Agency, 1986.