APA

Maran S. P., Sagan C., . (1992). The astronomy and astrophysics encyclopedia. New York [u.a.]: Van Nostrand Reinhold [u.a.].

Chicago

Maran Stephen P, Sagan Carl, . 1992. The astronomy and astrophysics encyclopedia. New York [u.a.]: Van Nostrand Reinhold [u.a.].

Harvard

Maran S. P., Sagan C., . (1992). The astronomy and astrophysics encyclopedia. New York [u.a.]: Van Nostrand Reinhold [u.a.].

MLA

Maran Stephen P, Sagan Carl, . The astronomy and astrophysics encyclopedia. New York [u.a.]: Van Nostrand Reinhold [u.a.]. 1992.