APA

Eddington A. S., . (1929). The nature of the physical world. New York: The Macmillan Company.

Chicago

Eddington Arthur Stanley, . 1929. The nature of the physical world. New York: The Macmillan Company.

Harvard

Eddington A. S., . (1929). The nature of the physical world. New York: The Macmillan Company.

MLA

Eddington Arthur Stanley, . The nature of the physical world. New York: The Macmillan Company. 1929.