APA

richardson j., . (1992). what happens when you cach a cold. london: evan brothers.

Chicago

richardson joy, . 1992. what happens when you cach a cold. london: evan brothers.

Harvard

richardson j., . (1992). what happens when you cach a cold. london: evan brothers.

MLA

richardson joy, . what happens when you cach a cold. london: evan brothers. 1992.