APA

Armstrong R. G., . (1966). Make the most of your day. New York: The Christophers.

Chicago

Armstrong Richard G, . 1966. Make the most of your day. New York: The Christophers.

Harvard

Armstrong R. G., . (1966). Make the most of your day. New York: The Christophers.

MLA

Armstrong Richard G, . Make the most of your day. New York: The Christophers. 1966.