APA (7th ed.) Citation

De Wet, O. (1949). The valley of the shadow. Blackwood.

Chicago Style (17th ed.) Citation

De Wet, Oloff. The Valley of the Shadow. Edinburgh [u.a.]: Blackwood, 1949.

MLA (9th ed.) Citation

De Wet, Oloff. The Valley of the Shadow. Blackwood, 1949.