APA-referens (7:e uppl.)

Lewis, C., & Hooper, W. (1982). Fern-seed and elephants: And other essays on christianity. Collins.

Chicago-referens (17:e uppl.)

Lewis, C.S, och Walter Hooper. Fern-seed and Elephants: And Other Essays on Christianity. Glasgow: Collins, 1982.

MLA-referens (9:e uppl.)

Lewis, C.S, och Walter Hooper. Fern-seed and Elephants: And Other Essays on Christianity. Collins, 1982.