APA (7th ed.) Citation

Caters, C. d. (1940). Portrait du Portugal. Plon.

Chicago Style (17th ed.) Citation

Caters, Christian de. Portrait Du Portugal. Paris: Plon, 1940.

MLA (9th ed.) Citation

Caters, Christian de. Portrait Du Portugal. Plon, 1940.

Warning: These citations may not always be 100% accurate.