APA

Davis، Deneena, . (2008). The 10 most essential natural resources. New York: scholastic.

Chicago

Davis، Deneena, . 2008. The 10 most essential natural resources. New York: scholastic.

Harvard

Davis، Deneena, . (2008). The 10 most essential natural resources. New York: scholastic.

MLA

Davis، Deneena, . The 10 most essential natural resources. New York: scholastic. 2008.