APA
Arnold, . (1990). A book about gardens. Macmiillan Education, Hanpshire: .
Chicago
Arnold, . 1990. A book about gardens. Macmiillan Education, Hanpshire: .
Harvard
Arnold, . (1990). A book about gardens. Macmiillan Education, Hanpshire: .
MLA
Arnold, . A book about gardens. Macmiillan Education, Hanpshire: . 1990.