APA

Brown G. I., . (1953). A simple guide to modern valency theory. London: Longmans, Green.

Chicago

Brown George Ingham, . 1953. A simple guide to modern valency theory. London: Longmans, Green.

Harvard

Brown G. I., . (1953). A simple guide to modern valency theory. London: Longmans, Green.

MLA

Brown George Ingham, . A simple guide to modern valency theory. London: Longmans, Green. 1953.