APA
National Industrial Conference Board, National Industrial Conference Board, . (1957). Improving staff and line relationships. : .
Chicago
National Industrial Conference Board, National Industrial Conference Board, . 1957. Improving staff and line relationships. : .
Harvard
National Industrial Conference Board, National Industrial Conference Board, . (1957). Improving staff and line relationships. : .
MLA
National Industrial Conference Board, National Industrial Conference Board, . Improving staff and line relationships. : . 1957.