APA

Whittier A., . (2006). W hat,s so funny?. New York: Scholastic.

Chicago

Whittier A.J, . 2006. W hat,s so funny?. New York: Scholastic.

Harvard

Whittier A., . (2006). W hat,s so funny?. New York: Scholastic.

MLA

Whittier A.J, . W hat,s so funny?. New York: Scholastic. 2006.