APA

Lewis C. S., . (1959). Perelandra. Freiburg: Herder.

Chicago

Lewis Clive Staples, . 1959. Perelandra. Freiburg: Herder.

Harvard

Lewis C. S., . (1959). Perelandra. Freiburg: Herder.

MLA

Lewis Clive Staples, . Perelandra. Freiburg: Herder. 1959.