APA

Verne J., Gray E., . (2001). 20,000 Leagues under the Sea. Activity Book. Newbury: Express Publishing.

Chicago

Verne J, Gray E, . 2001. 20,000 Leagues under the Sea. Activity Book. Newbury: Express Publishing.

Harvard

Verne J., Gray E., . (2001). 20,000 Leagues under the Sea. Activity Book. Newbury: Express Publishing.

MLA

Verne J, Gray E, . 20,000 Leagues under the Sea. Activity Book. Newbury: Express Publishing. 2001.