APA
Healey and Baker, . (1990). OWL `90: offices West of London incorporating business space. London: Healey and Baker.
Chicago
Healey and Baker, . 1990. OWL `90: offices West of London incorporating business space. London: Healey and Baker.
Harvard
Healey and Baker, . (1990). OWL `90: offices West of London incorporating business space. London: Healey and Baker.
MLA
Healey and Baker, . OWL `90: offices West of London incorporating business space. London: Healey and Baker. 1990.