APA

GILBERT H., . (2000). STAR ZOO. : Oxford bookworms library.

Chicago

GILBERT HARRY, . 2000. STAR ZOO. : Oxford bookworms library.

Harvard

GILBERT H., . (2000). STAR ZOO. : Oxford bookworms library.

MLA

GILBERT HARRY, . STAR ZOO. : Oxford bookworms library. 2000.