APA

Samuel N., . (2008). The ten coolest wonders of the univers. New York: Scholastic.

Chicago

Samuel Nigel, . 2008. The ten coolest wonders of the univers. New York: Scholastic.

Harvard

Samuel N., . (2008). The ten coolest wonders of the univers. New York: Scholastic.

MLA

Samuel Nigel, . The ten coolest wonders of the univers. New York: Scholastic. 2008.