APA (7th ed.) Citation

De la Mare, W. (1923). The riddle: And other stories. Selwyn & Blount.

Chicago Style (17th ed.) Citation

De la Mare, Walter. The Riddle: And Other Stories. London: Selwyn & Blount, 1923.

MLA (8th ed.) Citation

De la Mare, Walter. The Riddle: And Other Stories. Selwyn & Blount, 1923.