APA
Mike Coles ; Richard Gott ; Tony Thornley, . (1990). Active Science 1. Londres: Collins Educational.
Chicago
Mike Coles ; Richard Gott ; Tony Thornley, . 1990. Active Science 1. Londres: Collins Educational.
Harvard
Mike Coles ; Richard Gott ; Tony Thornley, . (1990). Active Science 1. Londres: Collins Educational.
MLA
Mike Coles ; Richard Gott ; Tony Thornley, . Active Science 1. Londres: Collins Educational. 1990.
