APA
Grey Advertising Inc, . (1980). Transportation handicapped users and non-users of special transportation systems in four cities. Summary report of a survey. New York, NY: Grey Advertising Inc.
Chicago
Grey Advertising Inc, . 1980. Transportation handicapped users and non-users of special transportation systems in four cities. Summary report of a survey. New York, NY: Grey Advertising Inc.
Harvard
Grey Advertising Inc, . (1980). Transportation handicapped users and non-users of special transportation systems in four cities. Summary report of a survey. New York, NY: Grey Advertising Inc.
MLA
Grey Advertising Inc, . Transportation handicapped users and non-users of special transportation systems in four cities. Summary report of a survey. New York, NY: Grey Advertising Inc. 1980.