एपीए उद्धरण

Bull George. (1977). Directors Hand Book (2nd ed.). McGraw-Hill.

शिकागो स्टाइल उद्धरण

Bull George. Directors Hand Book. 2nd ed. London: McGraw-Hill, 1977.

एमएलए उद्धरण

Bull George. Directors Hand Book. 2nd ed. McGraw-Hill, 1977.