APA
Royal Institute of Philosophy (London), Royal Institute of Philosophy (London), . (1970). Lectures. London: Macmillan.
Chicago
Royal Institute of Philosophy (London), Royal Institute of Philosophy (London), . 1970. Lectures. London: Macmillan.
Harvard
Royal Institute of Philosophy (London), Royal Institute of Philosophy (London), . (1970). Lectures. London: Macmillan.
MLA
Royal Institute of Philosophy (London), Royal Institute of Philosophy (London), . Lectures. London: Macmillan. 1970.
