APA
Teodore Clymer ; Billie Parr, . (1976). Helicopters and Gingerbread. Massachusetts: Ginn and Company.
Chicago
Teodore Clymer ; Billie Parr, . 1976. Helicopters and Gingerbread. Massachusetts: Ginn and Company.
Harvard
Teodore Clymer ; Billie Parr, . (1976). Helicopters and Gingerbread. Massachusetts: Ginn and Company.
MLA
Teodore Clymer ; Billie Parr, . Helicopters and Gingerbread. Massachusetts: Ginn and Company. 1976.
