APA

Sipley L. W., . (1951). A half century of color. New York: Macmillan.

Chicago

Sipley Louis Walton, . 1951. A half century of color. New York: Macmillan.

Harvard

Sipley L. W., . (1951). A half century of color. New York: Macmillan.

MLA

Sipley Louis Walton, . A half century of color. New York: Macmillan. 1951.