Carvalho, R. d. (1949). As sombras e as vozes. [s.n.].
Chicago Style (17th ed.) CitationCarvalho, Raúl de. As Sombras E as Vozes. [s.n.], 1949.
MLA引文Carvalho, Raúl de. As Sombras E as Vozes. [s.n.], 1949.
警告：這些引文格式不一定是100％准確.
APA引文