APA

Spear M. E., . (1952). Charting statistics. New York: McGraw-Hill.

Chicago

Spear Mary Eleanor, . 1952. Charting statistics. New York: McGraw-Hill.

Harvard

Spear M. E., . (1952). Charting statistics. New York: McGraw-Hill.

MLA

Spear Mary Eleanor, . Charting statistics. New York: McGraw-Hill. 1952.