APA
Sage M., . (1903). MRS Piper & The society for psychical research. London: .
Chicago
Sage M, . 1903. MRS Piper & The society for psychical research. London: .
Harvard
Sage M., . (1903). MRS Piper & The society for psychical research. London: .
MLA
Sage M, . MRS Piper & The society for psychical research. London: . 1903.