Gaya APA

Swanson, C, P., Broad, C. (NULL). Lectures on psychical research . London:: London: Routledge & Kegan Paul; 1971.

Gaya MLA

Swanson, Carl, P.., Broad, C.D. "Lectures on psychical research". London:: London: Routledge & Kegan Paul; 1971, NULL. Text.