Gaya APA

Universe. (2008). [s.l.]: [s.n.].

Gaya Chicago

Universe. Ed.2Cet.3. [s.l.]: [s.n.], 2008. Text.

Gaya MLA

Universe. Ed.2Cet.3. [s.l.]: [s.n.], 2008. Text.

Gaya Turabian

Universe. [s.l.]: [s.n.], 2008. Print.