एपीए उद्धरण

Lewis, R. F. (1970). Planning and control for profit. Heinmann.

शिकागो स्टाइल उद्धरण

Lewis, Ralph F. Planning and Control for Profit. London: Heinmann, 1970.

एमएलए उद्धरण

Lewis, Ralph F. Planning and Control for Profit. Heinmann, 1970.