एपीए उद्धरण

Woolley, S. (1948). Power of concentration. Isaac pitman & Sons.

शिकागो स्टाइल उद्धरण

Woolley, S.F. Power of Concentration. London: Isaac pitman & Sons, 1948.

एमएलए उद्धरण

Woolley, S.F. Power of Concentration. Isaac pitman & Sons, 1948.