APA استشهاد

Gibbons, D. V. (1992). The Company secretary' Hand Book. Chapeman &hall.

استشهاد بنمط شيكاغو

Gibbons, David. V. The Company Secretary' Hand Book. London: Chapeman &hall, 1992.

MLA استشهاد

Gibbons, David. V. The Company Secretary' Hand Book. Chapeman &hall, 1992.