APA

Lewis C. S., . (1976). A grief observed. Greenwich, Conn: Seabury Press.

Chicago

Lewis C S, . 1976. A grief observed. Greenwich, Conn: Seabury Press.

Harvard

Lewis C. S., . (1976). A grief observed. Greenwich, Conn: Seabury Press.

MLA

Lewis C S, . A grief observed. Greenwich, Conn: Seabury Press. 1976.