APA

ARMSTRONG C., . (1968). THE BALLOON MAN. New York: COWARD MC CANN,INC.

Chicago

ARMSTRONG CHARLOTTE, . 1968. THE BALLOON MAN. New York: COWARD MC CANN,INC.

Harvard

ARMSTRONG C., . (1968). THE BALLOON MAN. New York: COWARD MC CANN,INC.

MLA

ARMSTRONG CHARLOTTE, . THE BALLOON MAN. New York: COWARD MC CANN,INC. 1968.