APA

Coville، bruce, Coville، bruce, . (2005). The monsters ring. New York: scholastic inc.

Chicago

Coville، bruce, Coville، bruce, . 2005. The monsters ring. New York: scholastic inc.

Harvard

Coville، bruce, Coville، bruce, . (2005). The monsters ring. New York: scholastic inc.

MLA

Coville، bruce, Coville، bruce, . The monsters ring. New York: scholastic inc. 2005.