APA (7th ed.) Citation

Doyle, S. A. C. A casa vazia. [Lisboa?].

Chicago Style (17th ed.) Citation

Doyle, Sir Arthur Conan. A Casa Vazia. [Lisboa?].

MLA (8th ed.) Citation

Doyle, Sir Arthur Conan. A Casa Vazia. [Lisboa?].

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