APA

Morrell W. P., . (1941). The gold rushes. New York: The Macmillan Co.

Chicago

Morrell W P, . 1941. The gold rushes. New York: The Macmillan Co.

Harvard

Morrell W. P., . (1941). The gold rushes. New York: The Macmillan Co.

MLA

Morrell W P, . The gold rushes. New York: The Macmillan Co. 1941.