Columbia subject headings:
Authors, English--20th century--Biography.
Christie, Agatha, 1890-1976.
Detective and mystery stories, English--History and criticism.
Harvard subject headings:
Authors, English--20th century--Biography
Christie, Agatha, 1890-1976
Detective and mystery stories, English--History and criticism.
Princeton subject headings:
Christie, Agatha, 1890-1976--Bibliography.
Christie, Agatha, 1890-1976.