एपीए उद्धरण

MacGregor, J. E. (1974). Letter: Screening for cervical cancer.

शिकागो स्टाइल उद्धरण

MacGregor, J E. Letter: Screening for Cervical Cancer. 1974.

एमएलए उद्धरण

MacGregor, J E. Letter: Screening for Cervical Cancer. 1974.