Patrícia, I., & Doyle, A. C. (1987). <O >mistério do vale Boscombe. Edinter.
Lua i Stíl Chicago (17ú heag.)Patrícia, Isabel, agus Arthur Conan Doyle. <O >mistério Do Vale Boscombe. Edinter, 1987.
Lua MLA (8ú heag.)Patrícia, Isabel, agus Arthur Conan Doyle. <O >mistério Do Vale Boscombe. Edinter, 1987.
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