APA

Blume J., . (2002). Double Fudge. New York: Penguin Group.

Chicago

Blume Judy, . 2002. Double Fudge. New York: Penguin Group.

Harvard

Blume J., . (2002). Double Fudge. New York: Penguin Group.

MLA

Blume Judy, . Double Fudge. New York: Penguin Group. 2002.