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Chicago-Zitierstil (17. Ausg.)Planetary Studies: Proceedings of Symposium 4 and the Topical Meeting of the COSPAR Interdisciplinary Scientific Commission B (meetings B7 and B8) of the COSPAR Twenty-eight Plenary Meeting Held in The Hague, The Netherlands, 25 June - 6 July 1990. 1. ed. Oxford u.a: Pergamon Press, 1992.
MLA-Zitierstil (9. Ausg.)Planetary Studies: Proceedings of Symposium 4 and the Topical Meeting of the COSPAR Interdisciplinary Scientific Commission B (meetings B7 and B8) of the COSPAR Twenty-eight Plenary Meeting Held in The Hague, The Netherlands, 25 June - 6 July 1990. 1. ed. Pergamon Press, 1992.