APA (7th ed.) Citation

European Space Agency, Seibert, G., Fitton, B., & Battrick, B. (2001). A world without gravity. ESA Publications Division.

Chicago Style (17th ed.) Citation

European Space Agency, G.(Günther) Seibert, B. Fitton, and B. Battrick. A World Without Gravity. Noordwijk: ESA Publications Division, 2001.

MLA (9th ed.) Citation

European Space Agency, et al. A World Without Gravity. ESA Publications Division, 2001.