एपीए उद्धरण

Williams, N. (2009). Duty and responsibility. Epitome Books.

शिकागो स्टाइल उद्धरण

Williams, Nancy. Duty and Responsibility. New Delhi: Epitome Books, 2009.

एमएलए उद्धरण

Williams, Nancy. Duty and Responsibility. Epitome Books, 2009.