APA

Campbell R., . (1969). Light on a dark horse. London: Hollis & Carter.

Chicago

Campbell Roy, . 1969. Light on a dark horse. London: Hollis & Carter.

Harvard

Campbell R., . (1969). Light on a dark horse. London: Hollis & Carter.

MLA

Campbell Roy, . Light on a dark horse. London: Hollis & Carter. 1969.