StarGuides :
a directory of astronomy, space sciences, and related organizations of the world.
APA Citation
Heck, A. (André)., Observatoire de Strasbourg., Centre de données stellaires. (1993). StarGuides: a directory of astronomy, space sciences, and related organizations of the world. Strasbourg, France: Observatoire astronomique.
MLA Citation
Heck, A. (André), Observatoire de Strasbourg, and Centre de données stellaires. StarGuides: a Directory of Astronomy, Space Sciences, And Related Organizations of the World. Strasbourg, France: Observatoire astronomique, 1993.
Warning: These citations may not always be complete (especially for serials).