Dyfyniad APA

Gregg, J. R. (1962). Applied secretarial practice (5th ed.). Gregg Pub. Division, McGraw-Hill.

Dyfyniad Arddull Chicago

Gregg, John Robert. Applied Secretarial Practice. 5th ed. New York: Gregg Pub. Division, McGraw-Hill, 1962.

Dyfyniad MLA

Gregg, John Robert. Applied Secretarial Practice. 5th ed. Gregg Pub. Division, McGraw-Hill, 1962.

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