Cita APA (7a ed.)

Wet, O. d. (1938). Cardboard crucifix: The story of a pilot in Spain. William Blackwood and Sons.

Cita Chicago Style (17a ed.)

Wet, Oloff de. Cardboard Crucifix: The Story of a Pilot in Spain. Edinburgh [etc.]: William Blackwood and Sons, 1938.

Cita MLA (9a ed.)

Wet, Oloff de. Cardboard Crucifix: The Story of a Pilot in Spain. William Blackwood and Sons, 1938.