APA

Day A.E, . (1980). Discovery and Exploration. New York; London; Munchen; Paris: Clive Bingley.

Chicago

Day A.E, . 1980. Discovery and Exploration. New York; London; Munchen; Paris: Clive Bingley.

Harvard

Day A.E, . (1980). Discovery and Exploration. New York; London; Munchen; Paris: Clive Bingley.

MLA

Day A.E, . Discovery and Exploration. New York; London; Munchen; Paris: Clive Bingley. 1980.