APA
National Industrial Conference Board (New York), National Industrial Conference Board (New York), . (1959). Corporate directorship practices. New York: NICB.
Chicago
National Industrial Conference Board (New York), National Industrial Conference Board (New York), . 1959. Corporate directorship practices. New York: NICB.
Harvard
National Industrial Conference Board (New York), National Industrial Conference Board (New York), . (1959). Corporate directorship practices. New York: NICB.
MLA
National Industrial Conference Board (New York), National Industrial Conference Board (New York), . Corporate directorship practices. New York: NICB. 1959.
