Dyfyniad APA

Harrison, J. (1964). Secretarial duties/2e (2nd ed.). Sir Isaac Pitman & Sons Ltd.

Dyfyniad Arddull Chicago

Harrison, John. Secretarial Duties/2e. 2nd ed. London: Sir Isaac Pitman & Sons Ltd, 1964.

Dyfyniad MLA

Harrison, John. Secretarial Duties/2e. 2nd ed. Sir Isaac Pitman & Sons Ltd, 1964.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.