Cita APA (7a ed.)

Comet Halley Dust and Gas Environment & European Space Agency. (1981). Proceedings of a The Comet Halley Dust and Gas Environment: 26-27 August 1981. ESA.

Cita Chicago Style (17a ed.)

Comet Halley Dust and Gas Environment y European Space Agency. Proceedings of a The Comet Halley Dust and Gas Environment: 26-27 August 1981. Noordwijk: ESA, 1981.

Cita MLA (9a ed.)

Comet Halley Dust and Gas Environment y European Space Agency. Proceedings of a The Comet Halley Dust and Gas Environment: 26-27 August 1981. ESA, 1981.