Gregg, J. R. (1962). Applied secretarial practice (5th ed.). Gregg Pub. Division, McGraw-Hill.
Chicago (17e ed.) BronvermeldingGregg, John Robert. Applied Secretarial Practice. 5th ed. New York: Gregg Pub. Division, McGraw-Hill, 1962.
MLA (8e ed.) BronvermeldingGregg, John Robert. Applied Secretarial Practice. 5th ed. Gregg Pub. Division, McGraw-Hill, 1962.
Let op: Deze citaties zijn niet altijd 100% accuraat.