APA (7th ed.) Citation

European Space Agency, publisher, Contactivity (Leiden), & Fletcher, K. (2013). ERS missions: 20 years of observing earth. ESA Communications.

Chicago Style (17th ed.) Citation

European Space Agency, publisher, Contactivity (Leiden), and K. Fletcher. ERS Missions: 20 Years of Observing Earth. Noordwijk: ESA Communications, 2013.

MLA (9th ed.) Citation

European Space Agency, publisher, et al. ERS Missions: 20 Years of Observing Earth. ESA Communications, 2013.

Warning: These citations may not always be 100% accurate.