APA
Oxlad C., Mysteries, . (2007). The mystery of UFOs. London: Heinemann educational books.
Chicago
Oxlad Chris, Mysteries, . 2007. The mystery of UFOs. London: Heinemann educational books.
Harvard
Oxlad C., Mysteries, . (2007). The mystery of UFOs. London: Heinemann educational books.
MLA
Oxlad Chris, Mysteries, . The mystery of UFOs. London: Heinemann educational books. 2007.